Promberger property, Copper Mountain, Black Wonder Dist., Diablo Range, 14 miles (22.5 km) West of Patterson, Stanislaus Co., California
Ex. Steve Pullman, Collected 1976
A plate of white colored, bladed Hydromagnesite crystals which fluoresce white blue under SW UV. From an obscure location from which speicmens are not commenly available.
Condition: Very Good
Flaws: The matrix is a bit crumbly and a small piece or two may come dislodged in shipment.