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Sample n° 19636
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
AUGITE | (Ca,Mg,Fe)2Si2O6 | inosilicates | pyroxenes | major |
PLAGIOCLASE | (Na,Ca)(Al1+xSi3-x)O8 | tektosilicates | feldspar | major |
Description
Description:
radial feldspar aggregates with dark core, and augite phenocrysts, in kivite
Origin
- Country: Rwanda
- Region: Ruhengeri
- Locality: Kinigi Est, probably Gahinga volcano
Specification
-
Donors: Centre National de VolcanologieDonation year:
-
Sampling year: 1963Registration date:
-
Quantity: 1Size:
-
Dimension code 1>2>3: 1Quality 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