Mineralogy Database

Search |  About the mineralogy database |  Contact

Sample n° 4699

Minerals found in the sample
Mineral Formula Category Subcategory Importance
SCHORL NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) cyclosilicates tourmaline major
Description
Description: thick black prismatic crystal (1 cm) in quartz
Origin
  • Country: Rwanda
  • Region: Kigali
  • Locality: Musha
Specification
  • Donors: Polinard
    Donation year: 1954
  • Sampling year:
    Registration date:
  • Quantity: 1
    Size: 2
  • Dimension code 1>2>3: 3
    Quality code 1>2>3: 1
  • Holotype: no
    Paratype: no
    Radioactive: no
  • Thin section: no
    Chemical analysis: no
    X-Ray spectra: no
Previous page