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elements, isotopes
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  - stable isotopes
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- metals
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- phosphorus (13)
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fossils
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geochronology methods
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geologic age
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- Mesozoic
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- Paleozoic
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  - upper Precambrian
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igneous rocks
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metamorphic rocks
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meteorites
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        Tagish Lake Meteorite (2)
minerals
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- halides
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- minerals (20)
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- native elements
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- oxides
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- phosphates
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- silicates
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        tremolite (3)
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        aegirine (1)
        
        augite (2)
        
        clinoenstatite (1)
        
        diopside (5)
        
        hedenbergite (2)
        
        omphacite (1)
        
        spodumene (1)
      - orthopyroxene
        
        enstatite (4)
        
        ferrosilite (2)
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  - framework silicates
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        adularia (1)
        
        celsian (1)
        
        K-feldspar (5)
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        celsian (1)
      - plagioclase
        
        albite (3)
        
        anorthite (4)
    - leucite (1)
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      - meionite (1)
      - scapolite (2)
    - silica minerals
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      - opal
        
        opal-A (1)
        
        opal-CT (1)
      - quartz (33)
      - stishovite (2)
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    - sodalite group
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      - analcime (5)
      - chabazite (1)
      - clinoptilolite (11)
      - ferrierite (1)
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      - phillipsite (1)
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  - orthosilicates
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      - britholite group
        
        britholite (1)
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      - garnet group
        
        andradite (3)
        
        grossular (4)
        
        hydrogarnet (1)
        
        pyrope (3)
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      - mullite (4)
      - olivine group
        
        fayalite (5)
        
        forsterite (8)
        
        laihunite (1)
        
        olivine (16)
        
        tephroite (1)
        
        wadsleyite (2)
      - phenakite group
        
        eucryptite (1)
        
        phenakite (1)
      - sillimanite (6)
      - spurrite (1)
      - staurolite (5)
      - thaumasite (1)
      - titanite group
        
        titanite (5)
      - zircon group
        
        zircon (9)
    - sorosilicates
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        clinozoisite (4)
        
        epidote (3)
        
        zoisite (3)
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        gehlenite (3)
        
        melilite (1)
      - pumpellyite group
        
        pumpellyite (1)
  - ring silicates
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  - sheet silicates
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      - chlorite (20)
      - clinochlore (4)
      - sudoite (1)
    - clay minerals
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      - beidellite (3)
      - dickite (3)
      - halloysite (3)
      - hectorite (3)
      - imogolite (2)
      - kaolinite (68)
      - montmorillonite (70)
      - nacrite (1)
      - nontronite (10)
      - saponite (9)
      - smectite (85)
      - stevensite (2)
      - vermiculite (15)
    - corrensite (3)
    - gyrolite (1)
    - hydrobiotite (1)
    - illite (46)
    - magadiite (5)
    - margarite (1)
    - mica group
      - annite (2)
      - biotite (17)
      - celadonite (1)
      - glauconite (5)
      - muscovite (17)
      - phengite (1)
      - phlogopite (4)
    - palygorskite (5)
    - petalite (1)
    - pyrophyllite (2)
    - rectorite (1)
    - sepiolite (15)
    - sericite (1)
    - serpentine group
      - antigorite (3)
      - berthierine (3)
      - chrysotile (4)
      - cronstedtite (2)
      - lizardite (4)
      - serpentine (7)
    - talc (7)
- sulfates
  - alunite (3)
  - anglesite (2)
  - anhydrite (5)
  - barite (6)
  - brochantite (1)
  - celestine (2)
  - chalcanthite (1)
  - gypsum (8)
  - hexahydrite (1)
  - iron sulfates (1)
  - jarosite (8)
  - melanterite (2)
  - mirabilite (1)
  - rozenite (2)
  - schwertmannite (3)
  - selenite (1)
  - thaumasite (1)
  - thenardite (1)
- sulfides
  - anilite (1)
  - argentite (1)
  - arsenopyrite (4)
  - bornite (2)
  - chalcocite (1)
  - chalcopyrite (5)
  - cinnabar (1)
  - covellite (1)
  - galena (4)
  - greenockite (1)
  - heazlewoodite (2)
  - idaite (1)
  - iron sulfides (8)
  - mackinawite (1)
  - marcasite (2)
  - metacinnabar (1)
  - millerite (1)
  - molybdenite (2)
  - nickel sulfides (1)
  - orpiment (1)
  - pentlandite (3)
  - pyrite (43)
  - pyrrhotite (9)
  - realgar (1)
  - sphalerite (6)
  - stibnite (2)
  - violarite (1)
- sulfosalts
  - sulfantimonates
    - famatinite (1)
  - sulfantimonites
    - freibergite (1)
    - pyrargyrite (1)
    - tetrahedrite (2)
  - sulfarsenites
    - tennantite (2)
- tellurides
  - calaverite (1)
  - sylvanite (1)
- tungstates
  - scheelite (1)
  - wolframite (1)
Primary terms
- absolute age (17)
- Africa
  - Afar (1)
  - East Africa
    - Ethiopia (1)
  - Limpopo Belt (1)
  - North Africa
    - Morocco (1)
  - Southern Africa
    - Barberton greenstone belt (1)
    - Gariep Belt (1)
    - Kaapvaal Craton (2)
    - Namaqualand metamorphic complex (2)
    - Namibia
      - Windhoek Namibia (1)
    - South Africa
      - Bushveld Complex (2)
      - Merensky Reef (1)
      - Northern Cape Province South Africa (1)
      - Witwatersrand (1)
  - West Africa
    - Cameroon (1)
    - Ghana (1)