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Sample n° 6976
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
MONTMORILLONITE | (Na,Ca)0,3(Al,Mg)2Si4O10(OH)2nH2O | phyllosilicates | smectite | major |
Description
Description:
clayey block with conchoidal fracture (7 cm), bentonite
Origin
- Country: USA
- Region:
- Locality:
Specification
-
Donors: PolinardDonation year: 1954
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Sampling year:Registration date:
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Quantity: 1Size: 2
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Dimension code 1>2>3: 3Quality code 1>2>3: 1
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Holotype: noParatype: noRadioactive: no
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Thin section: noChemical analysis: noX-Ray spectra: no