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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Hydromagnesite from
Livermore, Livermore Mining District (Tesla District), Alameda County, California, USA


04796250017272020756748.jpg
Hydromagnesite

Livermore, Livermore Mining District, Alameda County, California, USA
04796250017272020756748.jpg
Hydromagnesite

Livermore, Livermore Mining District, Alameda County, California, USA
04796250017272020756748.jpg
Hydromagnesite

Livermore, Livermore Mining District, Alameda County, California, USA
Locality type:City
Classification
Species:Hydromagnesite
Formula:Mg5(CO3)4(OH)2 · 4H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hydromagnesite data
Locality Data:Click here to view Livermore, Livermore Mining District (Tesla District), Alameda County, California, USA
Data Identifiers
Mindat Occurrence Record ID:22262
Long-form Identifier:1:3:22262:0
GUID (UUID V4):0
Nearest other occurrences of Hydromagnesite
20.9km (13.0 miles) ⓘSugarloaf Butte, Cedar Mountain Mining District, Alameda County, California, USA
21.0km (13.0 miles) ⓘDevils Hole occurrence, Sugarloaf Butte, Cedar Mountain Mining District, Alameda County, California, USA
25.1km (15.6 miles) ⓘLa Vista Quarry, Hayward, Alameda County, California, USA
32.4km (20.1 miles) ⓘAlum Rock Canyon, East Foothills, Black Wonder Mining District, Santa Clara County, California, USA
40.4km (25.1 miles) ⓘRed Mountain Mine, Red Mountain, Black Wonder Mining District, Stanislaus County, California, USA
43.5km (27.0 miles) ⓘPlatner prospect, Red Mountain, Black Wonder Mining District, Stanislaus County, California, USA
43.9km (27.3 miles) ⓘAdobe Creek (Adobe Canyon), Black Wonder Mining District, Stanislaus County, California, USA
47.6km (29.6 miles) ⓘPromberger property (Pramberger), Copper Mountain, Black Wonder Mining District, Stanislaus County, California, USA
54.0km (33.6 miles) ⓘDel Puerto Canyon (Arroyo del Puerto), Copper Mountain, Black Wonder Mining District, Stanislaus County, California, USA
63.9km (39.7 miles) ⓘFort Point, San Francisco, San Francisco County, California, USA
References
Betts, John (n.d.) John Betts website listing.
 
and/or  
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