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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Opal from
Red Bluff, Lower Hot Springs Mining District (Norris Mining District), Madison County, Montana, USA


Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Red Bluff, Lower Hot Springs Mining District (Norris Mining District), Madison County, Montana, USA
Data Identifiers
Mindat Occurrence Record ID:705626
Long-form Identifier:1:3:705626:0
GUID (UUID V4):0
Nearest other occurrences of Opal
36.6km (22.7 miles) ⓘThree Forks Placer, Gallatin County, Montana, USA
57.9km (36.0 miles) ⓘHyalite Peak, Gallatin County, Montana, USA
66.6km (41.4 miles) ⓘGallatin Petrified Forest, Park County, Montana, USA
82.0km (51.0 miles) ⓘGolden Curry Mine (Sourdough mine; Jacqueline; Jacquemin), Elkhorn Mining District, Jefferson County, Montana, USA
99.9km (62.1 miles) ⓘW. Wilson Mine (Liverpool Mine), Clancy-Lump Gulch Mining District, Jefferson County, Montana, USA
References
Winchell, Alexander Newton (1914) Mining districts of the Dillon quadrangle, Montana, and adjacent areas. Bulletin 574. US Geological Survey doi:10.3133/b574
 
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