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Mineralogy Extension ()

DRAFT

Mineralogy Extension

Title : Mineralogy Extension List of Terms

Date version issued : Pending

Date created : 2025-04-22

Part of TDWG Standard : Pending

This version : http://rs.tdwg.org/minext/doc/list/yyyy-mm-dd

Latest version :

Abstract : The Mineralogy extension is a standardized lexicon developed by the Mineralogy Extension Task Group to improve the distribution of information pertaining to mineralogy collections. The expansion comprises a compilation of knowledge organization resources, focused on the normative term list, incorporating support for the Compound Specimen Model, various classification systems, and an expanded array of geologic contexts.

Contributors : Ben Norton, Rachel Walcott, Thomas Burri, Allison Dombrowski, Nicolas Greber, Olle Hints, Adam Mansur, André Puschnig, Jolyon Ralph, Stephen Richard, Chris Tacker

Creator : The Mineralogy Extension Task Group

Bibliographic citation : Mineralogy Extension Task Group. 2025. Mineralogy Extension List of Terms. Biodiversity Information Standards (TDWG). http://rs.tdwg.org/mineralogy/doc/list/yyyy-mm-dd

1 Introduction

1.1 Status of the content of this document

Sections 2 through 3 are normative, except for Table 1. In Section 4 and its subparts, the values of the Normative IRI, Definition, Required, and Repeatable are normative. The value of Usage (if it exists for a given term) is normative in that it specifies how a borrowed term should be used as part of Latimer Core. The values of Term Name is non-normative, although one can expect that the namespace abbreviation prefix is one commonly used for the term namespace. Labels and the values of all other properties (such as notes) are non-normative.

1.2 RFC 2119 key words

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.

1.3 Categories of terms

2 Borrowed Vocabulary

Table 1. Vocabularies from which terms have been borrowed (non-normative)

Vocabulary Abbreviation Namespaces and abbreviations
Darwin Core DwC dwc: = http://rs.tdwg.org/dwc/terms/
Darwin Core Chronometric Age Vocabulary Chrono chrono: = http://rs.tdwg.org/chrono/terms/

3 Namespaces, Prefixes and Term Names

The namespace of terms borrowed from other vocabularies is that of the original. The namespace of de novo Mineralogy Extension terms is http://rs.tdwg.org/mineralogy/terms/. In the table of terms, each term entry has a row with the term name. This term name is generally an “unqualified name” preceded by a widely accepted prefix designating an abbreviation for the namespace It is RECOMMENDED that implementers who need a namespace prefix for the MinExt namespace use minext. In this web document, hovering over a term in the Index By Term Name list below will reveal a complete URL that can be used in other web documents to link to this document’s treatment of that term, even if it is from a borrowed vocabulary. It is very important to note that some vocabularies, e.g those of the Dublin Core Metadata Initiative (DCMI), provide versions of the same term in two different namespaces, one providing for string values and one providing for IRIs, even where that separation is simply a recommendation, not a mandate. See this DCMI wiki entry on this topic.

4 Metadata Terms

The normative documentation provided below utilizes a set of standardized metadata terms. These are defined as follows:

Label Definition Qualifier Term
Term A word or phrase used to represent a concept that follows a specific naming convention suitable for machine use rdf:label
Label The preferred lexical label for a resource in a given language skos:prefLabel
Class Class name (without preferred namespace prefix) a term (rdf:Property) belongs to rdfs:Class
Material Category The semantic boundaries of a concept within which a concept is valid within the context of a dwc:Material tdwg:materialCategory
Definition A descriptive statement that supplies a complete explanation of the intended meaning of the type and serves to differentiate it from related concepts. skos:definition
Examples Supplies an example of concept usage skos:example
Usage Note Information on how a term is to be used. vann:usageNote
RDF Type Property that states the type or category a term belongs within the class-property data structure defined in the RDF Schema rdf:type
Datatype Identifies the type of data, which has a bearing on the acceptable data values, the operations that can be performed with the data, and the ways in which the data are stored. cv:DataType
Is Required Specifies that when a resource is utilized a value must be supplied tdwg:isRequired
Note A general note, for any purpose not covered elsewhere in the vocabulary skos:note
Namespace IRI The preferred namespace URI to use when using terms from this vocabulary vann:preferredNamespaceURI
Modified Date on which the resource was changed and serves as the version identifier dcterms:modified

5 Term index

5.1 Index By Term Name

Classes
Chemistry
ChronometricAge
Conservation
ConstituentPart
GeologicContext
Hazard
Location
MaterialAssertion
Name

6 Vocabulary

Term Name geoext:Chemistry
Term IRI Pending
Label Chemistry
Definition Properties that describe the chemical composition of a geological material (mineral)
RDF Type rdfs:Class
Term Name geoext:chemistryRemarks
Term IRI Pending
Label Chemistry Remarks
Definition General remarks about the chemical and isotopic composition of a mineral
Material Category Constituent Part
Datatype string
Belongs to Class Chemistry
RDF Type rdf:Property
Term Name geoext:measuredChemistry
Term IRI Pending
Label Measured Formula
Definition A concise expression of the chemical composition of a mineral that shows the number of atoms of each element in a molecule, their spatial arrangement, and their linkage to each other.
Material Category Constituent Part
Examples
  • SiO2 (65.76), TiO2 (32.120), Al2O3 (2.21)
  • (Mg0.77Fe0.23)2SiO4
  • An6.4 Ab73.6 Or20
Datatype string
Belongs to Class Chemistry
RDF Type rdf:Property
Term Name geoext:measuredChemistrySource
Term IRI Pending
Label Measured Chemistry Source
Definition A list (concatenated and separated) of resources associated with the reported measured chemistry described specifically enough to allow anyone in the future to use the same resources.
Material Category Constituent Part
Usage Note Recommended best practice is to use full bibliographic citations, global unique identifiers, or resolvable and persistent URIs. See the broader concept http://rs.tdwg.org/dwc/terms/associatedReferences
Examples
  • Novak, G. A., & Gibbs, G. V. (1971). The crystal chemistry of the silicate garnets. American Mineralogist: Journal of Earth and Planetary Materials, 56(5-6), 791-825.
Datatype string
Belongs to Class Chemistry
RDF Type rdf:Property
Term Name geoext:mineralogicalAnalysisProtocol
Term IRI Pending
Label Mineralogical Analysis Protocol
Definition The technique utilized to determine the chemical composition or crystallography of a mineral
Material Category Constituent Part
Usage Note Acronyms should be avoided even for widely recognized annotations. Recommended best practice is to use a controlled vocabulary such as https://vocabs.ardc.edu.au/viewById/650
Examples
  • Wet Chemistry
  • X-ray fluorescence
  • Electron probe microanalysis
  • Scanning electron microscopy with energy-dispersive X-ray spectroscopy
  • X=ray diffraction
Datatype string
Belongs to Class Chemistry
RDF Type rdf:Property
Term Name chrono:ChronometricAge
Term IRI Pending
Label ChronometricAge
Definition An approximation of a temporal position (in the sense conveyed by https://www.w3.org/TR/owl-time/#time:TemporalPosition) that is supported via evidence.
RDF Type rdfs:Class
Term Name chrono:chronometricAgeGeologicProcess
Term IRI Pending
Label Chronometric Age Geologic Process
Definition The name of the geologic process associated with the chronometric age
Material Category Constituent Part
Examples
  • Igneous Crystallization
  • magmatic cooling
Datatype string
Belongs to Class ChronometricAge
RDF Type rdf:Property
Term Name geoext:Conservation
Term IRI Pending
Label Conservation
Definition Processes, protocols, and techniques established for the purpose of the protection and preservation of a mineral or specimen
RDF Type rdfs:Class
Term Name geoext:damageRemarks
Term IRI Pending
Label Damage Remarks
Definition A general description of any material changes to a mineral which is perceived to have negatively affected an item’s value-defining aspects.
Material Category Specimen
Examples
  • Due to oxidation and hydration of the pyrite in the coal, the sample has largley decayed to a coal powder with some larger coal pieces
  • Some terminations broken off
  • Attached label not legible (or torn, or covered)
Datatype string
Belongs to Class Conservation
RDF Type rdf:Property
Term Name geoext:handlingRequirements
Term IRI Pending
Label Handling Requirements
Definition A summary of the procedural requirements employed to preserve and protect the specimen during physical interaction
Material Category Specimen
Examples
  • Handle with gloves
  • Not to be taken ourt of storage medium
  • delicate
  • avoid contact with direct sunlight
Datatype string
Belongs to Class Conservation
RDF Type rdf:Property
Term Name geoext:treatments
Term IRI Pending
Label Treatments
Definition Description of any processes or curatorial actions taken specifically to mitigate damage
Material Category Specimen
Usage Note Includes both proactive and reactive actions
Datatype string
Belongs to Class Conservation
RDF Type rdf:Property
Term Name geoext:ConstituentPart
Term IRI Pending
Label Constituent Part
Definition A physically discernable part of a compound specimen that has a distinct proportion and role relative to the parent object and a discrete determination based on physical and chemical characteristics. All parts of a compound specimen are unified through physical attachment or other unifying criteria.
Notes Specimens comprised of and defined by Constituent Parts unified through physical attachment or other unifying criteria are referred to as Compound Specimens
RDF Type rdfs:Class
Term Name geoext:constituentPartID
Term IRI Pending
Label Constituent Part ID
Definition A unique identifier for an instance of a ConstituentPart.
Material Category Constituent Part
Usage Note In the absence of a persistent global unique identifier, construct one from a combination of identifiers in the record that will most closely make the dwc:constituentPartID globally unique. Recommended best practice is to use a persistent, globally unique identifier. Constituent Part ID is used to construct the relationship between a specimen (compound object) and mineral (constituent part).
Examples
  • 8fa58e08-08de-4ac1-b69c-1235340b7111
Datatype string
Belongs to Class ConstituentPart
RDF Type rdf:Property
Term Name geoext:constituentPartProportion
Term IRI Pending
Label Proportion
Definition The qualitative or quantitative fraction the geologic specimen is composed of the constituent part
Material Category Constituent Part
Usage Note Recommended best practice is to use a controlled vocabulary such as https://cgi.vocabs.ga.gov.au/object?uri=http%3A//resource.geosciml.org/classifier/cgi/proportionterm
Examples
  • 20%
  • minor
  • dominant
Datatype string
Belongs to Class ConstituentPart
RDF Type rdf:Property
Term Name geoext:constituentPartRole
Term IRI Pending
Label Role
Definition Specifies the relationship between a constituent part and its parent geologic specimen
Material Category Constituent Part
Usage Note Recommended best practice is to use a controlled vocabulary such as https://cgi.vocabs.ga.gov.au/object?uri=http://resource.geosciml.org/classifier/cgi/compoundmaterialconstituentpartrole
Notes The role defines the relationship between a constituent part and its parent compound object.
Examples
  • matrix
  • groundmass
  • phenocryst
  • xenolith
  • vein
Datatype string
Belongs to Class ConstituentPart
RDF Type rdf:Property
Term Name geoext:constituentPartType
Term IRI Pending
Label Constituent Part Type
Definition Term belonging to an upper-level, generalized classification scheme of geoext:ConstituentPart
Material Category Constituent Part
Usage Note Recommended best practice is to use a shared controlled vocabulary. A Constituent Part belongs to only one Constituent Part Type.
Notes The formal name assigned to a geoscience collection is traditionally based on the predominant Constituent Part Type of specimens in the collection or the field of science associated with the respective part type (e.g., Mineral Collection or Mineralogy Collection).
Examples
  • Mineral
  • Fossil
  • Rock
Datatype string
Belongs to Class ConstituentPart
RDF Type rdf:Property
Term Name geoext:materialEntityID
Term IRI Pending
Label Material Entity ID
Definition Globally unique identifier of the parent dwc:MaterialEntity. Establishes a relationship with an Material Entity record
Material Category Specimen
Usage Note Required to establish a relationship between a parent material entity record (specimen-level) with zero to many child mineral records (mineral-level)
Examples
  • 8fa58e08-08de-4ac1-b69c-1235340b7111
Datatype string
Belongs to Class ConstituentPart
RDF Type rdf:Property
Term Name dwc:GeologicContext
Term IRI Pending
Label Geologic Context
Definition Geological information, such as stratigraphy, that qualifies a region or place.
RDF Type rdfs:Class
Term Name geoext:geologicEvent
Term IRI Pending
Label Geologic Event
Definition An identifiable event during which one or more geological processes associated with the formation of a geological specimen or act to modify an existing geological specimen.
Material Category Specimen
Examples
  • Sevier orogeny
  • Alleghanian orogeny
  • Alpine orogeny
  • Variscan orogeny
  • Waipounamu Erosion surface
  • Vredefort impact
Datatype string
Belongs to Class GeologicContext
RDF Type rdf:Property
Term Name geoext:geologicProvince
Term IRI Pending
Label Geologic Province
Definition Extensive named region with a similar geologic history throughout or similar structural, petrographic, or physiographic features in which the dwc:Location occurs
Material Category Specimen
Examples
  • Coastal Plain
  • Piedmont
  • Blue Ridge
  • Colorado Plateaus
  • Basin and Range
  • Dalradian Metamorphic Belt
Datatype string
Belongs to Class GeologicContext
RDF Type rdf:Property
Term Name geoext:lithodemicUnit
Term IRI Pending
Label Lithodemic Unit
Definition Geologic unit that lacks stratification, primarily comprised of intrusive, deformed, and (or) metamorphosed rock, and characterized by irregularly mixed lithology or highly complicated structural relations.
Material Category Specimen
Usage Note Due to the unstructured nature of complexes, both named units and lithological descriptive terms are acceptable values.
Examples
  • Catalina Core Complex (named unit) igneous complex
  • injection complex
  • metamorphic complex
  • basement complex
Datatype string
Belongs to Class GeologicContext
RDF Type rdf:Property
Term Name geoext:mineralSequence
Term IRI Pending
Label Mineral Sequence
Definition A list of minerals in a specimen ordered in a manner that illustrates the relative timing of mineral formation within a specimen.
Material Category Specimen
Usage Note The list should only contain minerals that belong to a readily identifiable sequence of formation. Therefore, a list may contain a subset of the minerals in a specimen. Minerals that formed in-situ with one another are separated by a plus. Minerals that formed in the sequence are separated by a greater than symbol.
Examples
  • Sphalerite > Quartz > Pyrite
  • Calcite > Quartz > Sphalerite > Pyrite
Datatype string
Belongs to Class GeologicContext
RDF Type rdf:Property
Term Name geoext:tectonicUnits
Term IRI Pending
Label Tectonic Units
Definition The combination of all tectonic unit names for the rock from which the dwc:MaterialEntity was collected.
Material Category Specimen
Usage Note Recommended best practice is to use an authoritative tectonic unit lexicon such as the Tectonic Map of Switzerland (TK500)
Examples
  • Upper Helvetic, Wildhorn Nappe Complex, Sublage Nappe
Datatype string
Belongs to Class GeologicContext
RDF Type rdf:Property
Term Name geoext:Hazard
Term IRI Pending
Label Hazard
Definition Properties that describe sources of potential damage, harm, or adverse health effects on something or someone.
RDF Type rdfs:Class
Term Name geoext:hazardRemarks
Term IRI Pending
Label Hazard Remarks
Definition General remarks regarding the hazard type within the scope of the specific collection object
Material Category Specimen
Examples
  • asbestos
  • slightly radioactive
Datatype string
Belongs to Class Hazard
RDF Type rdf:Property
Term Name geoext:hazardType
Term IRI Pending
Label Hazard Type
Definition Term that belongs to a hazard classification scheme based on a set of unique characteristics and negative health outcomes.
Material Category Specimen
Usage Note Recommended best practice is to use a controlled vocabulary
Examples
  • Carcinogen
  • skin irritant
  • radioactive
  • toxic
Datatype string
Belongs to Class Hazard
RDF Type rdf:Property
Term Name dwc:Location
Term IRI Pending
Label Location
Definition A spatial region or named place.
RDF Type rdfs:Class
Term Name geoext:isTypeLocality
Term IRI Pending
Label Is Type Locality
Definition Whether or not the dwc:Location is the same locality where the original material used for the formal definition of the mineral species originated.
Material Category Constituent Part
Examples
  • True
  • False
Datatype boolean
Belongs to Class Location
RDF Type rdf:Property
Term Name geoext:namedPlace
Term IRI Pending
Label Named Place
Definition The full, unabbreviated name of a geographic location not otherwise categorized by a dwc:Location property that is naturally occurring or anthropogenic in origin within a historical, administrative, or cultural context in which dcterms:Location occurs.
Material Category Specimen
Usage Note Only the names of locations anthropogenic in origin should use the namedPlace property. For naturally-occurring locations, please use terms in dwc:GeologicContext (e.g., geologicProvince) class. For named places represented as URIs or global unique identifiers, please use dwc:locationID.
Examples
  • Susanna Mine
  • Craigleith Quarry
  • Red Cloud Mine
Datatype string
Belongs to Class Location
RDF Type rdf:Property
Term Name geoext:sampledFeature
Term IRI Pending
Label Sampled Feature
Definition The type of physical feature, both naturally-occuring and anthropogenic in origin, sampled during a sampling event (dwc:Event) at a dwc:Location
Material Category Specimen
Usage Note A sampled feature has a type and optional name that distinuishes the feature from similar entities. Sampled features can be anthropogenic (roadcut, borehole) or naturally occurring (outcrop).
Examples
  • float
  • mine dump
  • mine/quarry pit
  • outcrop
  • erratic boulder
Datatype string
Belongs to Class Location
RDF Type rdf:Property
Term Name dwc:MaterialAssertion
Term IRI Pending
Label Material Assertion
Definition An Assertion is a statement about an entity and the process by which it was ascertained. An Assertion can be made at one time and assert the state of something at another time. Examples: a measurement, an observation, an annotation.
RDF Type rdfs:Class
Term Name geoext:aggregateForm
Term IRI Pending
Label Aggregate Form
Definition Observable crystal shapes of an assemblage of minerals
Material Category Specimen
Usage Note Recommended best practice is to use a controlled vocabulary
Examples
  • radial
  • botryoidal
  • oolithic
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:alterationDescription
Term IRI Pending
Label Alteration Description
Definition A description of any observed changes in the composition of a mineral brought about by physical or chemical processes related to changes in the physical or chemical environment.
Material Category Constituent Part
Examples
  • Dolomitization
  • Fenitization
  • Rodingitization
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:associatedMinerals
Term IRI Pending
Label Associated Minerals
Definition List of secondary minerals associated with a mineral in a specimen
Material Category Constituent Part
Examples
  • calcite
  • dolomite
  • baryte
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:cleavage
Term IRI Pending
Label Cleavage
Definition Type of breakages along a plane of weakness, especially those parallel to crystal faces
Material Category Constituent Part
Examples
  • Extraordinary well developed rectangular cleavage
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:color
Term IRI Pending
Label Color
Definition The intrinsic color of a mineral under natural light
Material Category Constituent Part
Usage Note Here, color is caused by the absorption, or lack of absorption of different wavelengths of natural light by a particular mineral
Notes Color under natural light conditions
Examples
  • Blue
  • green
  • red
  • iridescent
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:crystalForm
Term IRI Pending
Label Crystal Form
Definition Geometric shape of a crystal
Material Category Constituent Part
Usage Note Recommended best practice is to use a controlled vocabulary
Notes Alternate definition: A crystal form is a set of crystal faces that are related to each other by symmetry.
Examples
  • cube
  • ditrigonal pyramid
  • scalenohedron
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:crystalHabit
Term IRI Pending
Label Crystal Habit
Definition A general term for describing the outward appearance of a mineral
Material Category Constituent Part
Usage Note Recommended best practice is to use a controlled vocabulary. For a given type of crystal, the habit may vary from locality to locality depending on environment of growth.
Examples
  • isometric
  • tabular
  • fibrous
  • dogtooth
  • nailhead
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:exsolutionTexture
Term IRI Pending
Label Exsolution Texture
Definition A brief description of textures formed by exsolution
Material Category Constituent Part
Examples
  • Ilmenite lamellae in olivine
  • Clinopyroxene lamellae along the (100) plane of orthopyroxene
  • Antiperthite exsolution.
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:inclusions
Term IRI Pending
Label Inclusions
Definition Short description of any inclusions present within a mineral that includes the phase and physical characteristics
Material Category Constituent Part
Notes Inclusions are defined as small foreign bodies (solid, liquid, or gas) within the physical bounds of a material commonly trapped during formation
Examples
  • Star-shaped rutile needles in quartz
  • Needles of tourmaline in quartz (blue quarz)
  • Fluid inclusions (liquid bubble and single crystal) in quartz
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:luminescence
Term IRI Pending
Label Luminescence Description
Definition The type and nature of light emitted from the mineral upon receiving energy from an external source.
Material Category Constituent Part
Usage Note Includes all types of luminescence including fluorescence (all wavelengths) and phosphorescence. Recommended best practice is to use nomenclature in part based on the source of energy, or the trigger for the luminescence.
Examples
  • Green fluorescence
  • Pink under short wave UV light
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:luster
Term IRI Pending
Label Luster
Definition The reflection of light from the surface of a mineral, described by its quality and intensity
Material Category Constituent Part
Usage Note Recommended best practice is to use a controlled vocabulary
Examples
  • Metallic
  • Glassy
  • Waxy
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:maxCrystalDimensionInMillimeters
Term IRI Pending
Label Maximum Axial Dimension
Definition Maximum axial dimension of largest crystal measured in millimeters
Material Category Constituent Part
Examples
  • 30
Datatype numeric
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:measuredDepthInMillimeters
Term IRI Pending
Label Measured Depth in Millimeters
Definition Measured depth of specimen reported numerically in millimeters
Material Category Specimen
Usage Note Height, width, and depth measurements should measured along perpendicular axes from a single shared point of origin
Examples
  • 2
Datatype numeric
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:measuredHeightInMillimeters
Term IRI Pending
Label Measured Height in Millimeters
Definition Measured height of specimen reported numerically in millimeters
Material Category Specimen
Usage Note Height, width, and depth measurements should measured along perpendicular axes from a single shared point of origin
Examples
  • 5
Datatype numeric
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:measuredMassInGrams
Term IRI Pending
Label Measured Mass In Grams
Definition Mass of specimen measured in grams
Material Category Specimen
Examples
  • 4994
Datatype numeric
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:measuredWidthInMillimeters
Term IRI Pending
Label Measured Width in Millimeters
Definition Measured width of specimen reported numerically in millimeters
Material Category Specimen
Usage Note Height, width, and depth measurements should measured along perpendicular axes from a single shared point of origin
Examples
  • 10
Datatype numeric
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:mineralDescription
Term IRI Pending
Label Mineral Description
Definition Comments or notes about the mineral instance, especially those that distinguish the mineral from similar materials in a collection
Material Category Constituent Part
Usage Note The scope of this term is strictly to a mineral within the context of the specimen. Specimen level descriptions belong in the related term, specimenDescription. Sibling concept to http://rs.tdwg.org/dwc/terms/occurrenceRemarks
Examples
  • Pink fluorite on quartz
  • Lengenbachite on sugar-grained dolomite
  • Epitaxial growth on kyanite
  • Doubly terminated quartz crystals
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:specimenDescription
Term IRI Pending
Label Specimen Description
Definition Comments or notes about the specimen (physical object) especially those that distinguish the specimen from similar materials in a collection
Material Category Specimen
Usage Note See broader concept http://rs.tdwg.org/dwc/terms/occurrenceRemarks for additional usage notes
Examples
  • Showpiece
  • Historically valuable
  • Extraordinary composition
  • Two generations of quartz
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:twinningLaw
Term IRI Pending
Label Twinning Law
Definition Short description of any physically discernable twinning
Material Category Constituent Part
Examples
  • Dauphine twinning/Dauphine Law
  • Japan twinning/Japan Law
  • Brazil twinning/Brazil Law
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:verbatimMass
Term IRI Pending
Label Verbatim Mass
Definition The original reported verbatim mass includes original units of measurement
Material Category Specimen
Examples
  • 11.01 Lbs
  • 105.07 g
  • 2.45 kg
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:verbatimSize
Term IRI Pending
Label Verbatim Size
Definition The verbatim size of a specimen as originally described in primary source material
Material Category Specimen
Examples
  • 10 cm x 5 cm X 5 cm
  • largest diameter 16 cm
  • width 3 inches
Datatype string
Belongs to Class MaterialAssertion
RDF Type rdf:Property
Term Name geoext:Name
Term IRI Pending
Label Name
Definition The designation of a mineral by a linguistic expression including both informal (verbatim) and formal (classifications) types
RDF Type rdfs:Class
Term Name geoext:catalogedName
Term IRI Pending
Label Cataloged Name
Definition A human-readable lexical label assigned at the specimen level for cataloging and other administrative purpose
Material Category Specimen
Usage Note Cataloged names are typically assigned for activities such as cataloging, physical organization, and exhibit presentation. They are often compond names with a predicate.
Examples
  • Quartz (var. Amethyst)
  • Calcite on Quatz
Datatype string
Belongs to Class Name
RDF Type rdf:Property
Term Name geoext:classificationCode
Term IRI Pending
Label Classification Code
Definition Alphanumeric pattern that adheres to a defined encoding scheme that identifies a particular term in a classification scheme
Material Category Constituent Part
Usage Note Classification codes are specific to a classification system and conform to a xkos:notationPattern
Notes Classification codes conform to a specific pattern specific to the scheme. See xkos:notationPattern
Examples
  • 71.02.02a.01
  • 9.AD.25
Datatype string
Belongs to Class Name
RDF Type rdf:Property
Term Name dcterms:language
Term IRI Pending
Label Language
Definition Language of the name
Material Category Constituent Part
Usage Note Recommended practice is to use either a non-literal value representing a language from a controlled vocabulary such as ISO 639-2 or ISO 639-3, or a literal value consisting of an IETF Best Current Practice 47 language tag.
Examples
  • en
Datatype string
Belongs to Class Name
RDF Type rdf:Property
Term Name geoext:mineralNamePublishedIn
Term IRI Pending
Label Mineral Name Published In
Definition A reference to the publication in which the name is derived, provided as formal citations or URI to an external resources
Material Category Constituent Part
Usage Note Narrower scope than dwc:namePublishedIn
Notes The term 'mineral' is prepended to term in order to distinguish them from similarly named terms in Darwin Core
Examples
  • Strunz
  • H. & Nickel
  • E.H. (2001): Strunz mineralogical tables. Schweizerbart
  • Stuttgart
  • 869 p.
  • Gaines
  • R.V.
  • Skinner
  • H.C.
  • Foord
  • E.E.
  • Mason
  • B.
  • Rosenzweig
  • A. (1997): Dana’s new mineralogy. Wiley & Sons
  • New York
  • 1819 p.
Datatype string
Belongs to Class Name
RDF Type rdf:Property
Term Name geoext:name
Term IRI Pending
Label Name
Definition A human-readable lexical label assigned to a mineral includes both informal (e.g., variety, synonym) and formal (classification) forms
Material Category Constituent Part
Usage Note The name defined in the first object is considered the preferred name
Notes For linked data and semantic purposes, the classification name is the skos:prefLabel and all other informal names are skos:altLabel
Examples
  • Quartz
  • Smoky Quartz
  • Muscovite
  • Garnet Group
Datatype string
Belongs to Class Name
RDF Type rdf:Property
Term Name geoext:nameConfirmationTechnique
Term IRI Pending
Label Name Confirmation Technique
Definition Analytical technique utlized to confirm the identity of a mineral
Material Category Constituent Part
Usage Note Recommended best practice is to use a controlled vocabulary
Examples
  • X-ray Diffraction
  • Raman Spectroscopy
Datatype string
Belongs to Class Name
RDF Type rdf:Property
Term Name geoext:nameIdentifier
Term IRI Pending
Label Name Identifier
Definition An identifier for the set of dwc:MineralName information. May be a global unique identifier or an identifier specific to the data set.
Material Category Constituent Part
Usage Note Recommended best practice is to use a persistent, globally unique identifier. Name ID is used to establish the one to many relationship between dwc:Mineral and dwc:MineralName that allows the assignment of multiple names to a single mineral in a specimen
Examples
  • 8fa58e08-08de-4ac1-b69c-1235340b7001
  • https://api.mindat.org/minerals_ima/21
Datatype string
Belongs to Class Name
RDF Type rdf:Property
Term Name geoext:nameRemarks
Term IRI Pending
Label Name Remarks
Definition Statements that provide further information on any part of a mineral name, especially information not captured elsewhere in the mineral name class
Material Category Constituent Part
Datatype string
Belongs to Class Name
RDF Type rdf:Property
Term Name geoext:nameType
Term IRI Pending
Label Name Type
Definition A term belonging a categorization scheme for organizing names based on usage and concept lineage
Material Category Constituent Part
Usage Note Ideally, terms in this field are derived from a enumerated domain. See Gavryliv (2023) for a detailed breakdown of informal, alternate names.
Notes Best suited for enumerated domains, but careful quantification is challenging with very specific definitions.
Examples
  • Variety
  • Synonym
  • Classification
  • Historical
  • Group Name
Datatype string
Belongs to Class Name
RDF Type rdf:Property