Tourmaline Complex borosilicate

Tourmaline in the East Region No notable occurrences in database yet. Tourmaline in the Front Range Region Clear Creek County - Santa Fe Mt. Area Douglas County - Devils Head area Jefferson County - Golden Gate Canyon area Tourmaline in the Northwest Region Grand County - Green Ridge area Tourmaline in the South Central Region Chaffee County - Mt. Antero - Sedalia Mine El Paso County - Crystal Park Fremont County - Border Feldspar Mine - Royal Gorge area - Texas Creek area Lake County - Hagerman Pass Park County - Badger Flats area - Wilkerson Pass East area - Wilkerson Pass West area Teller County - Four Mile Creek area - Lake George area Tourmaline in the Southwest Region Gunnison County - Quartz Creek area

Tourmaline crystal fragments from the Four Mile Creek area. Tourmaline crystals from south of the Golden Gate Canyon park. It was found in a mica schist near a large quartz outcrop. Specimen is 5 cm wide. Tourmaline crystals in quartz matrix from the Four Mile Creek area.

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