Mineralogy Database

Search | About the mineralogy database | Contact


Sample n° 12817

Minerals found in the sample
Mineral Formula Category Subcategory Importance
CROCIDOLITE (riebeckite) Na2(Fe,Mg)3(Fe3+)2Si8O22(OH)2 inosilicates amphiboles major
QUARTZ SiO2 tektosilicates - minor
Description
Description: tiger's eye (15 cm)
Origin
Country: South Africa       Region: Northern Cape       Locality: Niekerkshoop
Specification
Donors Verwoerd Sampling year
Donation year 1972 Registration date
 
Quantity 1 Dimension code 1>2>3 2
Size 2 Quality code 1>2>3 1
 
Holotype no Thin section no
Paratype no Chemical analysis no
Radioactive no X-Ray spectra no