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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Magnesite from
Socrates Mine, Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA


Locality type:Mine
Classification
Species:Magnesite
Formula:MgCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Magnesite data
Locality Data:Click here to view Socrates Mine, Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA
Data Identifiers
Mindat Occurrence Record ID:484137
Long-form Identifier:1:3:484137:1
GUID (UUID V4):0
Nearest other occurrences of Magnesite
0.7km (0.4 miles) ⓘContact Mine (Walker; Queen group), Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA
4.4km (2.7 miles) ⓘJumbo Mine (B & M Mine; Double Star Mine), Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA
5.3km (3.3 miles) ⓘChicago Mine (St. Louis Mine; Ural Mine; Pittsburg Mine), Castle Rock Springs, East Mayacmas Mining District, Lake County, California, USA
5.6km (3.5 miles) ⓘCulver-Baer Mine, North Fork Little Sulphur Creek, Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA
15.1km (9.4 miles) ⓘLytton, Sonoma County, California, USA
18.0km (11.2 miles) ⓘBrush deposit, Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA
20.7km (12.9 miles) ⓘMelville Ranch, Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA
20.9km (13.0 miles) ⓘYordi Ranch deposit (Ekert Ranch), Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA
21.9km (13.6 miles) ⓘPattenburg Refractory Magnesite Mine, Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA
22.5km (14.0 miles) ⓘBurgans Ranch property (Burgaus Ranch), Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA
References
Cooper, Fen (2002) Mineral News: 18(10): 1-8.
 
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