Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Biotite from
Randalls, Mount Monger Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia


Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Randalls, Mount Monger Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia
Data Identifiers
Mindat Occurrence Record ID:973093
Long-form Identifier:1:3:973093:9
GUID (UUID V4):0
Localities for Biotite in this Region
Transfind Mine, Randalls, Mount Monger Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia
Nearest other occurrences of Biotite
19.5km (12.1 miles) ⓘMount Monger Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia
22.4km (13.9 miles) ⓘSudden Jerk Gold Mine, Mount Monger, Mount Monger Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia
22.6km (14.1 miles) ⓘTransfind Mine, Randalls, Mount Monger Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia
26.8km (16.7 miles) ⓘWombola Dam Gold Mine, Mount Monger, Mount Monger Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia
27.2km (16.9 miles) ⓘWombola Gold Mine, Mount Monger, Mount Monger Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia
27.3km (17.0 miles) ⓘCarnilya Hill Ni Mine, Mount Monger, Mount Monger Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia
27.4km (17.1 miles) ⓘMajestic gold prospect (Imperial), Kalgoorlie-Boulder Shire, Western Australia, Australia
28.1km (17.5 miles) ⓘJuglah Gold Mine, Kalgoorlie-Boulder Shire, Western Australia, Australia
37.6km (23.3 miles) ⓘBellerophon-Nelson Gold Mine, St. Ives gold camp, Kambalda, Coolgardie Shire, Western Australia, Australia
39.6km (24.6 miles) ⓘBritannia-Sirius Gold Mine, St. Ives gold camp, Kambalda, Coolgardie Shire, Western Australia, Australia
References
Steadman, Jeffrey A., Large, Ross R., Davidson, Garry J., Bull, Stuart W., Thompson, Jay, Ireland, Trevor R., Holden, Peter (2014) Paragenesis and composition of ore minerals in the Randalls BIF-hosted gold deposits, Yilgarn Craton, Western Australia: Implications for the timing of deposit formation and constraints on gold sources. Precambrian Research, 243. 110-132 doi:10.1016/j.precamres.2014.01.002
 
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