Rio Tinto Borax open pit, Rio Tinto Borax Mine, Kramer Borate deposit, Boron, Kern County, California
Type locality for tunellite
Miniature - 5.1 x 4.3 x 4.0 cm
90 grams
Specimen status: Available
Send an email with specimen number to order
A complex tunellite crystal group,
with a somewhat glassy to pearly luster. As is typical
with this material, there are two spots which are either
flat terminations or clean cleaves (hard to
differentiate). Tunellite is an uncommon strontium borate
- SrB6O9(OH)2ยท3H2O,
for which the Rio Tinto Borax
Mine is the type locality. Mindat lists just
twelve global localities for this species. This fine
example is in excellent condition.
 |
 |
 |
 |
 |
 |