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 |
