- Death Valley
- Inyo County
- 4.7 by 3.2 by 2.6 cm – Miniature specimen (fits into a 5 cm cube)
Ulexite is a complex sodium calcium borate mineral with triclinic symmetry. The name honors Georg Ludwig Ulex (1811-1883), a nineteenth century German chemist. Ulexite typically forms fine needles and fibrous masses, but most specimens do not survive much handling. This is a rare clump of needles, affectionately known as a "cottonball". While discussed in the classical literature, these form on the surface of salt flats, and provided easy picking for early miners. Few are preserved. This specimen carries a vintage "Greiger's Minerals" label dating to the 1946-1953 period. Fragile but still mailable.
Item code: MS0962
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