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Quartz
Japan-law quartz twin, 5 cm, also twinned on the Dauphiné law, as revealed by irregular patches of differing reflectivity on the prism faces, from the PC mine, Jefferson County, Montana. Photo by Jeff Scovil.
Product details
Species
SizeMiniature
Dimensions5.0 cm
Locality
PC mine, Jefferson County, Montana
Publications
- Mineralogical Record Mineral Collections In American Northeast page 139
Added on02/13/2026
Comments
Known provenance
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