Rhodochrosite

Field of view: 10mm. Rhodochrosite associated with hausmannite. The thin white veins are rhodochrosite exhibiting perfect cleavage. At least three vein formation stages are recognized. The surrounding massive dark brown host is aggregate of fine hausmannite crystals.

Recovered from a chert-hosted bedded manganese deposit subjected to weak Prehnite-Pumpellyite to Zeolite facies metamorphism.

Rhodochrosite from this location was described in 1973.

Field of view: 10mm. Rhodochrosite associated with hausmannite. The pale brown to pink vein at the top is rhodochrosite. The massive brown host is aggregate of fine hausmannite crystals. The black bed traversing laterally at the center is fine Jacobsite crystals.