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Silicon dioxide

Quartz in the East Region

  • No notable occurrences in database yet.

Quartz in the Front Range Region

Quartz in the Northwest Region

Quartz in the South Central Region

Quartz in the Southwest Region


Cluster of white quartz crystals from the Ohio Mine in Ouray County. Specimen is 13 cm long.


A sparkling white cluster of drusy quartz casts after scalenohedral calcite crystals. This is one of a large lot collected by George Robertson in 1998. From the Ohio Mine in Ouray County. Measures 8 x 7 cm.
Photo courtesy of Dave Bunk Minerals.


Quartz encrustation (epimorph) of a barite blade from the OS Pocket in Ouray County. Specimen is 11.8 cm long.

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