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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Montmorillonite from
Sandstorm mine, Goldfield Mining District, Esmeralda County, Nevada, USA


Locality type:Mine
Classification
Species:Montmorillonite
Formula:(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Montmorillonite data
Locality Data:Click here to view Sandstorm mine, Goldfield Mining District, Esmeralda County, Nevada, USA
Data Identifiers
Mindat Occurrence Record ID:570057
Long-form Identifier:1:3:570057:8
GUID (UUID V4):0
Nearest other occurrences of Montmorillonite
0.4km (0.2 miles) ⓘKendall mine, Goldfield Mining District, Esmeralda County, Nevada, USA
28.3km (17.6 miles) ⓘHasbrouck Mountain, Divide Mining District, Esmeralda County, Nevada, USA
47.3km (29.4 miles) ⓘPahute Mesa deposit, Nye County, Nevada, USA
50.9km (31.6 miles) ⓘNevada Talc Mine, Tule Canyon Mining District, Esmeralda County, Nevada, USA
54.5km (33.9 miles) ⓘWhite Top mine, Sylvania Mining District, Esmeralda County, Nevada, USA
54.7km (34.0 miles) ⓘSarcobatus Flat deposit, Clarkdale Mining District, Nye County, Nevada, USA
56.5km (35.1 miles) ⓘWhite Giant Mine, Sylvania Mining District, Esmeralda County, Nevada, USA
56.7km (35.3 miles) ⓘWhite King Extension mine, Sylvania Mining District, Esmeralda County, Nevada, USA
57.1km (35.5 miles) ⓘC and C mine, Sylvania Mining District, Esmeralda County, Nevada, USA
57.8km (35.9 miles) ⓘBlanco mine, Coaldale Mining District, Esmeralda County, Nevada, USA
References
Econ Geol (1989) 84:2115-2138
 
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