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Sample n° 17020
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
HORNBLENDE | [ ]Ca2((Fe2+,Mg)4Al)(Si7Al)O22(OH)2 | inosilicates | amphiboles | major |
RIEBECKITE | [ ]Na2(Fe2+3Fe3+2)Si8O22(OH)2 | inosilicates | amphiboles | major |
Description
Description:
granite with coarse-crystalline hornblende, partially transformed to light blue riebeckite
Origin
- Country: Congo (RDC)
- Region: Bas-Congo
- Locality: Matadi area, Noqui Massif, Kinzau, carr. Fretin Construct
Specification
-
Donors: TackDonation year: 2012
-
Sampling year: 2011Registration date:
-
Quantity: 3Size:
-
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