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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Montmorillonite from
Side Hill Clay deposit (Vanderbilt Sidehill Mine; Side Hill group of claims), Ash Meadows, Ash Meadows Mining District, Amargosa Desert, Nye County, Nevada, USA


Locality type:Deposit
Classification
Species:Montmorillonite
Formula:(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Comments:Occurs as bentonite clay.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Montmorillonite data
Locality Data:Click here to view Side Hill Clay deposit (Vanderbilt Sidehill Mine; Side Hill group of claims), Ash Meadows, Ash Meadows Mining District, Amargosa Desert, Nye County, Nevada, USA
Data Identifiers
Mindat Occurrence Record ID:679016
Long-form Identifier:1:3:679016:5
GUID (UUID V4):0
Nearest other occurrences of Montmorillonite
8.4km (5.2 miles) ⓘEast Ash Meadows Clay Deposit, Ash Meadows Mining District, Amargosa Desert, Nye County, Nevada, USA
12.5km (7.7 miles) ⓘLos Angeles Chemical Company Clay Property, Ash Meadows Mining District, Amargosa Desert, Nye County, Nevada, USA
17.4km (10.8 miles) ⓘK-B deposit (Ewing claims), Ash Meadows Mining District, Amargosa Desert, Nye County, Nevada, USA
34.9km (21.7 miles) ⓘHard Scramble claim, Ryan, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
41.8km (25.9 miles) ⓘMeridian claim, Twenty Mule Team Canyon, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
43.6km (27.1 miles) ⓘBadwater Basin, Inyo County, California, USA
51.3km (31.9 miles) ⓘLake Tecopa Zeolite deposit, Lake Tecopa Basin, Inyo County, California, USA
57.1km (35.5 miles) ⓘ144 Zone deposit, Sterling Mine (Ambrose pit; Panama Mine; 144 Zone; Mary-Goldspar claim block [to the north [2004]]; Ambrose open pit; NBMG sample sites 1013 & 1014), Bare Mountain Mining District (Fluorine Mining District), Bare Mountain, Nye County, Nevada, USA
63.7km (39.6 miles) ⓘYucca Mountain, Nye County, Nevada, USA
64.8km (40.3 miles) ⓘDaisy deposit, Bare Mountain Mining District (Fluorine Mining District), Bare Mountain, Nye County, Nevada, USA
References
Norman, L.A. & Richard M. Stewart (1951), Mines and mineral resources of Inyo County, California: California Journal of Mines and Geology: 47(1): 99
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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