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Sample n° 9668
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
SCHORL | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) | cyclosilicates | tourmaline | major |
QUARTZ | SiO2 | tektosilicates | - | minor |
Description
Description:
black crystals (2 cm) in quartz
Origin
- Country: Rwanda
- Region: Gitarama
- Locality: Rutogbwe, route du Gite
Specification
-
Donors: VarlamoffDonation year:
-
Sampling year:Registration date:
-
Quantity: 2Size: 2
-
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