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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Cookeite from
Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA


03320890017363845242664.jpg
Cookeite, etc.

Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
05203110017272014155586.jpg
Cookeite, etc.

Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
04820040017361019975166.jpg
Cookeite, etc.

Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
03423710017272034722317.jpg
Cookeite, etc.

Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
04674270017363845251419.jpg
Cookeite, etc.

Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
01543080017363845266436.jpg
Cookeite, etc.

Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
03423710017272034722317.jpg
Cookeite, etc.

Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
07612560017272014189381.jpg
Cookeite, etc.

Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
04820040017361019975166.jpg
Cookeite, etc.

Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
Locality type:Quarry
Classification
Species:Cookeite
Formula:(LiAl4◻)[AlSi3O10](OH)8
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz12
Orthoclase10
Fluorapatite3
Bertrandite3
Brazilianite2
Hydroxylherderite1
Albite1
Goyazite1
Data
Mineral Data:Click here to view Cookeite data
Locality Data:Click here to view Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:28535
Long-form Identifier:1:3:28535:5
GUID (UUID V4):0
Nearest other occurrences of Cookeite
5.4km (3.3 miles) ⓘHayes Ledge Quarries (East and West), Greenwood, Oxford County, Maine, USA
5.5km (3.4 miles) ⓘOutback prospect (Gross prospect), Greenwood, Oxford County, Maine, USA
5.6km (3.5 miles) ⓘNoyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA
5.6km (3.5 miles) ⓘMorgan Quarry (Morgan Pit; Upper Noyes Mountain Quarry; Upper Harvard Quarry), Greenwood, Oxford County, Maine, USA
6.2km (3.9 miles) ⓘTamminen Quarry, Greenwood, Oxford County, Maine, USA
6.3km (3.9 miles) ⓘWaisanen Quarry (Tamminen-Waisanen Quarry), Greenwood, Oxford County, Maine, USA
7.0km (4.3 miles) ⓘBumpus Quarry, Albany, Oxford County, Maine, USA
7.6km (4.7 miles) ⓘSongo Pond Quarry (Kimball Ledge Quarry), Albany, Oxford County, Maine, USA
8.2km (5.1 miles) ⓘB.B. No. 7 Quarry, Norway, Oxford County, Maine, USA
11.6km (7.2 miles) ⓘSki Pike Quarry, West Paris, Oxford County, Maine, USA
References
Thompson, Woodrow B., Joyner, Ronald L., Woodman, Raymond G., King, Vandall T. (1998) Bulletin (41), A Collector's Guide to Maine Mineral Localities (3rd ed.) Maine Geological Survey
Rocks and Minerals (2003) 78:123
Falster, Alexander U., Simmons, William B., Webber, Karen L., Dallaire, Donald A., Nizamoff, James W., Sprague, Raymond A. (2019) The Emmons Pegmatite, Greenwood, Oxford County, Maine. Rocks & Minerals, 94 (6) 498-519 doi:10.1080/00357529.2019.1641021
 
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