BGS mineralogy and petrology collection record

Sample number RC1123/2
Sample Donor Not entered
Rock name 'Original entry: Riebeckite (Crocidolite)'
Stratigraphy Not entered
Comments Fragment of asbestiform crocidolite on shale. Composition by weight SiO2 50.90%, FeO 20.50%, Fe2O3%, Al2O3 -, CaO 1.45%, MgO 1.00%, MnO 0.05%, Na2O 6.20%, K2O 0.20%, H2O+ 2.37%, H2O- 0.22%, CO2 0.20%. Total 100.10. Presented by J.B. Nelson.
Locality details Crocidolite. Koegas, Cape Province, South Africa.
50k map sheet Not entered
Map reference Not entered
Year collected 0 
Bore name Not applicable
Confidentiality No restrictions