Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Gypsum from
Sandy No. 3 Mine, Elk Ridge Mining District, San Juan County, Utah, USA


Locality type:Mine
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Uraninite6
Malachite5
Uranophane4
Limonite2
Petrified Wood1
Clay1
Chalcopyrite1
Sandstone1
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Sandy No. 3 Mine, Elk Ridge Mining District, San Juan County, Utah, USA
Data Identifiers
Mindat Occurrence Record ID:307826
Long-form Identifier:1:3:307826:6
GUID (UUID V4):0
Nearest other occurrences of Gypsum
4.9km (3.0 miles) ⓘHideout Mine (Hideout No. 1 Mine), Deer Flat Mining District, San Juan County, Utah, USA
8.5km (5.3 miles) ⓘCamel Mine, Deer Flat Mining District, San Juan County, Utah, USA
8.7km (5.4 miles) ⓘW.N. Mine, Deer Flat Mining District, San Juan County, Utah, USA
13.4km (8.4 miles) ⓘWidowmaker Mine, Fry Mesa, White Canyon Mining District, San Juan County, Utah, USA
13.9km (8.6 miles) ⓘWhite Canyon No. 1 Mine, Fry Mesa, White Canyon Mining District, San Juan County, Utah, USA
14.6km (9.1 miles) ⓘScenic mine, Fry Mesa, White Canyon Mining District, San Juan County, Utah, USA
22.1km (13.7 miles) ⓘUnknown U Occurrence [1], White Canyon Mining District, San Juan County, Utah, USA
22.1km (13.7 miles) ⓘUnknown U Occurrence [4], White Canyon Mining District, San Juan County, Utah, USA
23.2km (14.4 miles) ⓘJacobs Chair Mine, Jacobs Chair, White Canyon Mining District, San Juan County, Utah, USA
30.7km (19.1 miles) ⓘGonaway-North Point claim, White Canyon Mining District, San Juan County, Utah, USA
References
USGS Bull 1132
Finnell, T. L., Franks, P. C., & Hubbard, H. A. (1963). Geology, ore deposits, and exploratory drilling in the Deer Flat area, White Canyon district, San Juan County, Utah USGS Bulletin 1132
 
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