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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Wollastonite from
Christmas Gift Mine, Ophir Mountain, Darwin Mining District, Darwin Hills, Inyo County, California, USA


Locality type:Mine
Classification
Species:Wollastonite
Formula:Ca3(Si3O9)
Comments:Abundant. Also occurs as large crystals in the contact limestones of this area.
Abundance at site:Very common
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Wollastonite data
Locality Data:Click here to view Christmas Gift Mine, Ophir Mountain, Darwin Mining District, Darwin Hills, Inyo County, California, USA
Data Identifiers
Mindat Occurrence Record ID:146705
Long-form Identifier:1:3:146705:5
GUID (UUID V4):0
Nearest other occurrences of Wollastonite
2.4km (1.5 miles) ⓘThompson Mine, Darwin Mine (Anaconda; Bernon Mine; Defiance Mine; Essex Mine; Independence Mine; Intermediate Mine; Rip Van Winkle Mine; Thompson Mine), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
2.8km (1.8 miles) ⓘDefiance Mine, Darwin Mine (Anaconda; Bernon Mine; Defiance Mine; Essex Mine; Independence Mine; Intermediate Mine; Rip Van Winkle Mine; Thompson Mine), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
3.8km (2.4 miles) ⓘCuster Mine, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
4.7km (2.9 miles) ⓘDarwin Mining District, Darwin Hills, Inyo County, California, USA
6.5km (4.0 miles) ⓘSilver Spoon Mine, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
27.7km (17.2 miles) ⓘUnnamed Wollastonite occurrence [2], Big Dodd Spring, Ubehebe Mining District, Cottonwood Mountains, Panamint Range (Panamint Mountains), Inyo County, California, USA
35.3km (21.9 miles) ⓘJ. O. Mine, Big Dodd Spring, Ubehebe Mining District, Cottonwood Mountains, Panamint Range (Panamint Mountains), Inyo County, California, USA
58.8km (36.5 miles) ⓘBroken Bottle Mine (Broken Sack), Manly Peak, Panamint Range (Panamint Mountains), Inyo County, California, USA
62.6km (38.9 miles) ⓘButte Valley (Hidden Valley), Panamint Range (Panamint Mountains), Inyo County, California, USA
86.1km (53.5 miles) ⓘUnnamed Wollastonite occurrence [1], Ridgecrest (Crumville), Rademacher Mining District, Kern County, California, USA
References
[…(abstract): Geol. Zentralbl., Band 21: 597]: 12
Knopf, Adolf (1914a), The Darwin silver-lead mining district, California: USGS Bulletin 580: 1-18.
Kelley, Vincent C. (1938) Geology and Ore Deposits of the Darwin Silver-Lead Mining District, Inyo County, California. California Journal of Mines and Geology, 34 (4) 503-562p.538
Hall, Wayne Everett & E.M. Mackevett (1958), Economic geology of the Darwin quadrangle, Inyo County, California: Calif Division of Mines Special Report 51, 77 pp.: 63-64
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 386.
 
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