Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Amblygonite from
Rubikon Mine, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia


Locality type:Mine
Classification
Species:Amblygonite
Formula:LiAl(PO4)F
Age information
Maximum recorded age:515 ± 36 Ma
Minimum recorded age:515 ± 36 Ma
Sample ages:
Recorded ageGeologic TimeSampleDating method
1515 ± 36 MaCambrian Series 24Rb-Sr
Sample references:
14
Haack, U., & Gohn, E. (1988). Rb-Sr data on some pegmatites in the Damara Orogen, Namibia. Communications of the Geological Survey of South West Africa/Namibia, 4, 15-19.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Amblygonite data
Locality Data:Click here to view Rubikon Mine, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia
Data Identifiers
Mindat Occurrence Record ID:150643
Long-form Identifier:1:3:150643:3
GUID (UUID V4):0
Nearest other occurrences of Amblygonite
7.0km (4.3 miles) ⓘHelikon I Pit, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia
7.8km (4.9 miles) ⓘHelikon II pegmatite, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia
9.0km (5.6 miles) ⓘNeuschwaben Farm 73 (Neu Schwaben), Karibib Constituency, Erongo Region, Namibia
11.4km (7.1 miles) ⓘRicksburg pegmatite, Okakoara Farm 43, Karibib Constituency, Erongo Region, Namibia
12.4km (7.7 miles) ⓘOtjua Mine, Otjua Farm 37, Karibib Constituency, Erongo Region, Namibia
30.9km (19.2 miles) ⓘOtjimbingwe Farm 104, Karibib Constituency, Erongo Region, Namibia
39.4km (24.5 miles) ⓘEtiro pegmatite, Etiro Farm 50, Karibib Constituency, Erongo Region, Namibia
54.3km (33.7 miles) ⓘVan der Made pegmatite, Schlucht Farm 162, Karibib Constituency, Erongo Region, Namibia
59.2km (36.8 miles) ⓘDavib Mine, Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia
61.0km (37.9 miles) ⓘAriakas pegmatite, Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia
References
Keller, P. (1991) The occurrence of Li-Fe-Mn phosphate minerals in granitic pegmatites of Namibia. Communications of the Geological Survey of Namibia, 7. 21-25
Broccardo, L., Kinnaird, J. A., & Nex, P. A. M. (2011). Preliminary fluid inclusion results from the Rubicon pegmatite, Karibib, Namibia. Asociación Geológica Argentina, Serie D, publicación especial No, 14, 45-48.
Ashworth, L. (2014). Mineralised Pegmatites of the Damara Belt, Namibia: Fluid inclusion and geochemical characteristics with implications for post-collisional mineralisation (Doctoral dissertation, Faculty of Science, University of the Witwatersrand).
 
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