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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Amethyst from
Ohio Mines (Imperial Mine; Webster Mine), Imperial Heights, Baraga County, Michigan, USA


Locality type:Mine
Classification
Species:Quartz var: Amethyst
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Amethyst data
Locality Data:Click here to view Ohio Mines (Imperial Mine; Webster Mine), Imperial Heights, Baraga County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:417138
Long-form Identifier:1:3:417138:6
GUID (UUID V4):0
Nearest other occurrences of Amethyst
32.2km (20.0 miles) ⓘEagle Mine, Michigamme Township, Marquette County, Michigan, USA
41.8km (25.9 miles) ⓘTilden Mine, Tilden Township, Marquette County, Michigan, USA
44.2km (27.5 miles) ⓘEmpire Mine, Palmer, Richmond Township, Marquette County, Michigan, USA
48.6km (30.2 miles) ⓘCrystal Falls Mine, Crystal Falls Township, Iron County, Michigan, USA
80.9km (50.3 miles) ⓘGravel quarry, Norway, Dickinson County, Michigan, USA
87.2km (54.2 miles) ⓘEast Vulcan Mine, Vulcan, Dickinson County, Michigan, USA
94.6km (58.8 miles) ⓘSeven Mile Point, Allouez Township, Keweenaw County, Michigan, USA
References
Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
 
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