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
Franklin Mine, Franklin, Sussex County, New Jersey, USA


06164720017272027558054.jpg
Gahnite

Franklin Mine, Franklin, Sussex County, New Jersey, USA
04468420017272027569231.jpg
Gahnite, etc.

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
02953220017615212029842.jpg
Gahnite

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
03612700017272027587946.jpg
Gahnite, etc.

Franklin Mine, Franklin, Sussex County, New Jersey, USA
06164720017272027558054.jpg
Gahnite

Franklin Mine, Franklin, Sussex County, New Jersey, USA
04468420017272027569231.jpg
Gahnite, etc.

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
07153270017615211942731.jpg
Gahnite

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
03612700017272027587946.jpg
Gahnite, etc.

Franklin Mine, Franklin, Sussex County, New Jersey, USA
06164720017272027558054.jpg
Gahnite

Franklin Mine, Franklin, Sussex County, New Jersey, USA
04468420017272027569231.jpg
Gahnite, etc.

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
02953220017615212029842.jpg
Gahnite

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
06336030017272028141669.jpg
Gahnite, etc.

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Locality type:Mine
Classification
Species:Gahnite
Formula:ZnAl2O4
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Calcite31
Willemite13
Serpentine Subgroup10
Rhodonite7
Andradite6
Microcline5
- var Amazonite2
Löllingite3
Pyroxferroite3
Fluorite3
Franklinite3
Pyroxmangite3
Mica Group3
Pyroxene Group3
Diopside3
- var Schefferite2
Augite2
Hendricksite2
Adamite2
Fayalite1
- var Roepperite (of Brush)1
Scheelite1
Fluorapatite1
Epidote1
Phlogopite1
Hydrotalcite1
Hematite1
Data
Mineral Data:Click here to view Gahnite data
Locality Data:Click here to view Franklin Mine, Franklin, Sussex County, New Jersey, USA
Photo GalleryView Gallery (8 photos)
Data Identifiers
Mindat Occurrence Record ID:53862
Long-form Identifier:1:3:53862:8
GUID (UUID V4):0
Localities for Gahnite in this Region
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Taylor Road dumps, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Nearest other occurrences of Gahnite
0.1km (0.1 miles) ⓘBuckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
0.2km (0.1 miles) ⓘTaylor Road dumps, Franklin Mine, Franklin, Sussex County, New Jersey, USA
0.2km (0.1 miles) ⓘTrotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
0.8km (0.5 miles) ⓘMill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
3.9km (2.4 miles) ⓘSterling Mine, Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA
4.0km (2.5 miles) ⓘPassaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA
References
Dunn, Pete J. (1995) Franklin and Sterling Hill, New Jersey: The world's most magnificent mineral deposits Vol. 4. The Franklin-Ogdensburg Mineralogical Society.p.580
Lucchesi, S., Della Giusta, A., Russo, U. (1998) Cation distribution in natural Zn-aluminate spinels. Mineralogical Magazine, 62 (1) 41-54 doi:10.1180/002646198547459
 
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