| 609tl ((PROBERTITE)), $10 MINIMUM BID, Boron Open Pit Mine, Kramer Borate Deposit, Boron, Kerns County, California, 5 x 3.5 x 2.5 cm, Miniature, | |
 | Neat, unusual, and kind of aesthetic in a way are these Probertite specimens. ex Jim Minette collection. |
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