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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Gahnite from
Noyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA


Locality type:Quarry
Classification
Species:Gahnite
Formula:ZnAl2O4
Comments:Reported by Wintringham (1962) based on a guess. Listed in King and Foord (1994), but now considered an unlikely report.
Confirmation
Validity:Erroneously Reported
Data
Mineral Data:Click here to view Gahnite data
Locality Data:Click here to view Noyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:28960
Long-form Identifier:1:3:28960:7
GUID (UUID V4):0
Nearest other occurrences of Gahnite
0.1km (0.0 miles) ⓘMorgan Quarry (Morgan Pit; Upper Noyes Mountain Quarry; Upper Harvard Quarry), Greenwood, Oxford County, Maine, USA
1.0km (0.6 miles) ⓘWitt Hill Chrysoberyl locality, Greenwood, Oxford County, Maine, USA
3.2km (2.0 miles) ⓘOhtonen Quarry, Greenwood, Oxford County, Maine, USA
5.6km (3.5 miles) ⓘEmmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
6.5km (4.0 miles) ⓘCobble Hill Quarry (George Howe prospect), West Paris, Oxford County, Maine, USA
25.8km (16.0 miles) ⓘLord Hill Quarry (Lord Hill Mine), Stoneham, Oxford County, Maine, USA
34.9km (21.7 miles) ⓘGroves Quarry (Hole in the Ground Quarry), West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
35.0km (21.7 miles) ⓘWade Quarry (Androscoggin Tourmaline prospect), West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
35.1km (21.8 miles) ⓘPulsifer Quarry & Dionne extension, West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
35.2km (21.8 miles) ⓘKeith Quarry (Towne Quarry), West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
References
Guidebook 1 to Mineral Collecting in the Maine Pegmatite Belt pg11-12
Cameron, Eugene N.
Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James J., Stewart, Glen W., Shainin, Vincent E. (1954) Pegmatite Investigations, 1942-45, in New England. Geological Survey Professional Paper 255. US Geological Survey doi:10.3133/pp255
King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey.
 
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