Rio Tinto Borax Open Pit, Rio Tinto Borax Mine, Kramer Borate deposit, Boron, Kern County, California
Type locality for tunellite
Miniature - 4.8 x 3.2 x 2.6 cm
26 grams
Ex Jim and Dawn Minette collection
Specimen status: Reserved
Send an email with specimen number to order
Two sharply crystallized and (on some
faces) quite lustrous tunellite crystals. The larger of
the pair measures 4.0 cm. Tunellite is a strontium borate
- SrB6O9(OH)2ยท3H2O,
for which the Rio Tinto Borax
Mine is the type locality. A rare mineral; Mindat gives just
nine confirmed global localities. A fine example for
the price, and in excellent condition. Ex Jim and Dawn
Minette collection.
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