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
Adventure mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA


08557680017389798762831.jpg
Quartz, etc.

Adventure mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA
08557680017389798762831.jpg
Quartz, etc.

Adventure mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA
08801120017385529388263.jpg
Quartz, etc.

Adventure mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA
Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Native Copper21
K Feldspar18
- var Adularia13
Epidote10
Tenorite8
Native Silver7
Calcite6
Prehnite6
Chlorite Group5
Pumpellyite-(Mg)3
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Adventure mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:48435
Long-form Identifier:1:3:48435:4
GUID (UUID V4):0
Nearest other occurrences of Quartz
1.4km (0.9 miles) ⓘRidge Mine, Mass Consolidated Mine, Mass City, Ontonagon County, Michigan, USA
1.6km (1.0 miles) ⓘMass Consolidated Mine, Mass City, Ontonagon County, Michigan, USA
1.6km (1.0 miles) ⓘMass Mine, Mass Consolidated Mine, Mass City, Ontonagon County, Michigan, USA
1.6km (1.0 miles) ⓘToltec Mine, Mass City, Ontonagon County, Michigan, USA
1.9km (1.2 miles) ⓘEvergreen Series (Evergreen Lodes), Ontonagon County, Michigan, USA
1.9km (1.2 miles) ⓘEvergreen Bluff Mine, Mass City, Ontonagon County, Michigan, USA
2.2km (1.3 miles) ⓘSouth Lake Mine (Aztec Mine), Mass City, Ontonagon County, Michigan, USA
2.5km (1.5 miles) ⓘOld Algomah Mine, Mass City, Ontonagon County, Michigan, USA
2.9km (1.8 miles) ⓘBelt Mine (Piscatauqua), Mass City, Ontonagon County, Michigan, USA
3.0km (1.9 miles) ⓘOld Mass Mine, Mass City, Ontonagon County, Michigan, USA
References
Rosemeyer, T. (1990) Through the Scope: Microminerals of the Caledonia Mine Ontonagon County, Michigan. Rocks & Minerals: 65(3): 240.
Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.112
 
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