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Sample n° 12547

Minerals found in the sample
Mineral Formula Category Subcategory Importance
BIOTITE K(Fe2+,Mg)3(AlSi3O10)(OH)2 phyllosilicates mica major
MUSCOVITE KAl2(Si3Al)O10(OH)2 phyllosilicates mica major
Description: large plates
Country: Angola       Region: Bengo Province       Locality: Dande
Donors Interfor, vander Maesen Sampling year
Donation year 1921 Registration date
Quantity 2 sacks Dimension code 1>2>3 3
Size 2 Quality code 1>2>3 1
Holotype no Thin section no
Paratype no Chemical analysis no
Radioactive no X-Ray spectra no