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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Quartz from
Livermore Quicksilver Mine, Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Livermore Quicksilver Mine, Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA
Data Identifiers
Mindat Occurrence Record ID:994113
Long-form Identifier:1:3:994113:7
GUID (UUID V4):0
Nearest other occurrences of Quartz
9.4km (5.8 miles) ⓘCornucopia Mine (Healdsburg Mine; Squaw Creek Mine), Black Oaks, West Mayacmas Mining District, Sonoma County, California, USA
10.3km (6.4 miles) ⓘEsperanza Mine (Bright Hope Mine), Sulphur Creek, Black Oaks, West Mayacmas Mining District, Sonoma County, California, USA
10.7km (6.6 miles) ⓘRosenhahnite occurrence, Russian River, Cloverdale area, Mendocino County, California, USA
11.1km (6.9 miles) ⓘSalt Spring Creek, Cloverdale area, Mendocino County, California, USA
12.9km (8.0 miles) ⓘCulver-Baer Mine, North Fork Little Sulphur Creek, Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA
14.8km (9.2 miles) ⓘPieta Creek area, Pieta, Mendocino County, California, USA
17.8km (11.1 miles) ⓘEureka Mine (Flagstaff Mine), Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA
18.2km (11.3 miles) ⓘContact Mine (Walker; Queen group), Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA
18.5km (11.5 miles) ⓘSocrates Mine, Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA
22.5km (14.0 miles) ⓘBig Injun Mine, Castle Rock Springs, East Mayacmas Mining District, Lake County, California, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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