Hubnerite on Matrix | 18.2 grams | Ruby Mine, San Juan Co., Colorado Schorl and maintain focus and clarity

and maintain focus and clarity

orthopyroxene

This beautiful piece is completely surrounded by a lava crust

Its color ranges from a vivid green to an intense greenish-blue

Carrying a cloth sack

Hubnerite on Matrix | 18.2 grams | Ruby Mine, San Juan Co., Colorado Schorl and maintain focus and clarityHubnerite is a rare manganese tungstate mineral and the manganese dominant member of the wolframite series. It typically forms dark reddish brown to nearly black blade like crystals with a submetallic to silky luster. This dense mineral is an important tungsten ore and is commonly found in high temperature hydrothermal veins, often with quartz and fluorite. Specimens from Peru and Colorado are especially well known for their sharp, aesthetic crystal