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Sample n° 4367
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
CASSITERITE | SnO2 | oxides and hydroxides | - | major |
MAGNETITE | Fe2+Fe3+2O4 | oxides and hydroxides | spinel | minor |
MUSCOVITE | KAl2(Si3Al)O10(OH)2 | phyllosilicates | mica | minor |
QUARTZ | SiO2 | tektosilicates | - | minor |
Description
Description:
brown crystals (1 cm) in pegmatite with muscovite
Information:
geochronology - Cahen, L. & Snelling, N.J., 1966. The Geochronology of Equatorial Africa. North-Holland Publishing Company, Amsterdam, 195 pp. (Monteyne-Poulaert, unpublished data)
Origin
- Country: Rwanda
- Region: Kibungo
- Locality: Rwinkwavu
Specification
-
Donors: PolinardDonation year: 1954
-
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