Mineralogy Database
Search |
About the mineralogy database |
Contact
Sample n° 11820
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
BIOTITE | K(Fe2+,Mg)3(AlSi3O10)(OH)2 | phyllosilicates | mica | major |
Description
Description:
elongated black plates on pegmatie (15 cm)
Origin
- Country: Czech Republic
- Region: Vysocina
- Locality: Dolni Bory
Specification
-
Donors: SteenstraDonation year: 1968
-
Sampling year:Registration date:
-
Quantity: 1Size: 2
-
Dimension code 1>2>3: 3Quality code 1>2>3: 1
-
Holotype: noParatype: noRadioactive: no
-
Thin section: noChemical analysis: noX-Ray spectra: no