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Sample n° 13952
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
CRYPTOMELANE | K(Mn4+7 Mn3+)O16 | oxides and hydroxides | - | major |
Description
Description:
earthy brown and rust-coloured block (10 cm)
Origin
- Country: Rwanda
- Region: Gisenyi
- Locality: Gatumba, Nyiramuganza
Specification
-
Donors: FransoletDonation year: 1982
-
Sampling year:Registration date:
-
Quantity: 1Size: 2
-
Dimension code 1>2>3: 3Quality code 1>2>3: 1
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Holotype: noParatype: noRadioactive: no
-
Thin section: noChemical analysis: noX-Ray spectra: no