At-A-Glance
Country of Origin
Germany
Photos
Essential Information
Specimen ID
1779
Mineral Name
Biotite
Mineral Variety
Manganophyllite
Chemical Formula
K(Mg,Fe++)3[AlSi3O10(OH,F)2
Additional Details
Specimen Number
023
Notes for Researchers
Petereit 116, price $0.25
Physical Description
Dark gray dense fine grained mass
Geographic Origin
Locality Nickname
Germany
Locality Lat/Long
51.165691, 10.451526