Mineralogy Database
Search |
About the mineralogy database |
Contact
Sample n° 12499
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
BERYL | Be3Al2Si6O18 | cyclosilicates | - | major |
Description
Description:
stony and emerald-like prismatic crystals (1-8 cm), partly twinned
Origin
- Country: Rwanda
- Region: Gisenyi
- Locality: Gatumba
Specification
-
Donors: ComblainDonation year: 1970
-
Sampling year:Registration date:
-
Quantity: XSize: 2
-
Dimension code 1>2>3: 2Quality code 1>2>3: 1
-
Holotype: noParatype: noRadioactive: no
-
Thin section: noChemical analysis: noX-Ray spectra: no