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
Marvel Loch East Project, Coolgardie Shire, Western Australia, Australia


Locality type:Project
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 Marvel Loch East Project, Coolgardie Shire, Western Australia, Australia
Data Identifiers
Mindat Occurrence Record ID:1827509
Long-form Identifier:1:3:1827509:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
24.3km (15.1 miles) ⓘBoorabbin Rock Quarry, Coolgardie Shire, Western Australia, Australia
54.1km (33.6 miles) ⓘHeaney's Find, Yellowdine, Yilgarn Shire, Western Australia, Australia
57.4km (35.7 miles) ⓘYilgarn Star Gold Mine, Marvel Loch, Yilgarn Shire, Western Australia, Australia
65.0km (40.4 miles) ⓘNevoria Gold Mine, Marvel Loch, Yilgarn Shire, Western Australia, Australia
68.0km (42.3 miles) ⓘBronco Gold Mine, Marvel Loch, Yilgarn Shire, Western Australia, Australia
70.0km (43.5 miles) ⓘMount Caudan iron ore and gold prospect, Parker Range Goldfield, Yilgarn Shire, Western Australia, Australia
70.7km (43.9 miles) ⓘMountain King Gold Mine (Donovan's Find; Howlett's Battery), Marvel Loch, Yilgarn Shire, Western Australia, Australia
73.0km (45.4 miles) ⓘMarvel Loch Gold Mine, Marvel Loch, Yilgarn Shire, Western Australia, Australia
74.1km (46.0 miles) ⓘQueen Victoria Rocks prospect, Coolgardie Shire, Western Australia, Australia
74.1km (46.1 miles) ⓘJacoletti Gold Mine, Marvel Loch, Yilgarn Shire, Western Australia, Australia
References
Investing News Network (2023) Marvel Loch East Rare Earth Project Recent Sampling Confirms Widespread Ree Mineralisation In Monzogranite. https://investingnews.com/marvel-loch-east-rare-earth-project-recent-sampling-confirms-widespread-ree-mineralisation-in-monzogranite/
Knorsch, Manuel, Gazley, Michael, Ince, Madeleine, Kartal, Muhammet, Trunfull, Eliza, Lilly, Kat, Piechocka, Agnieszka (2025) An introduction to clay-hosted REE deposits in Australia. Geoscience Frontiers, 16 (2). doi:10.1016/j.gsf.2024.101977
 
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