Reviews
Rare, 1.25" Colorless Probertite Crystal - Germany
This is a gorgeous, 1.25" long, rare probertite crystal collected from Kohnstein Quarry in Thuringia, Germany. It shows wonderful monoclinic form along with excellent transparency, as most examples from California or Turkey are opaque. This is the only location known in Germany to produce this uncommon mineral.
Comes with an acrylic display case and mineral tack.
Comes with an acrylic display case and mineral tack.
About Probertite
Probertite is a rare, colorless to gray hydrous sodium calcium borate mineral found in evaporite deposits, named for UC mining dean Frank Probert. It's known for its needle-like crystals in radiating rosettes, a hardness of 3.5, and association with borax deposits in places like California and Turkey. It's an important ore of boron, used in glass, fiberglass, soaps, and more, though it's uncommon for collectors.
General Chemical Formula - (NaCaB₅O₇(OH)₄·3H₂O)
Probertite is a rare, colorless to gray hydrous sodium calcium borate mineral found in evaporite deposits, named for UC mining dean Frank Probert. It's known for its needle-like crystals in radiating rosettes, a hardness of 3.5, and association with borax deposits in places like California and Turkey. It's an important ore of boron, used in glass, fiberglass, soaps, and more, though it's uncommon for collectors.
General Chemical Formula - (NaCaB₅O₇(OH)₄·3H₂O)
$39
SPECIES
Probertite
LOCATION
Kohnstein Quarry, Niedersachswerfen, Harztor, Thuringia, Germany
SIZE
1.25" long
CATEGORY
ITEM
#345079
