History of the Crazy Sphinx is spotty, but specimens have been dated back to the early 30s in some collections. The deposit is a very small, mineralized zone in a skarn zone related to the broader boulder batholith. The mine is still worked for specimens in the present day, the main prizes being cobalt blue colored spinel and white grossular garnets. Minor amounts of clinozoisite, schorl, and clintonite are also present. The deposit is extremely difficult to mine, and virtually all spinel occur encased entirely in garnet or vesuvianite. It is extremely rare to see otherwise. Only a handful of localities worldiwde produce blue spinel, with this being the best USA locale!
This specimen features a deep blue colored spinel group, which has been revealed through careful matrix prep. While the crystals are small, they have superb color and are nicely terminated for the locale. Quite a nice example of a Montana classic.
Thank you so much for viewing! Please message for any further information
(1.4 × 1.2 × 0.9 in - 3.5 × 3.0 × 2.2 cm) 1.7oz / 49g
ORDERS SHIP MONDAYS
History of the Crazy Sphinx is spotty, but specimens have been dated back to the early 30s in some collections. The deposit is a very small, mineralized zone in a skarn zone related to the broader boulder batholith. The mine is still worked for specimens in the present day, the main prizes being cobalt blue colored spinel and white grossular garnets. Minor amounts of clinozoisite, schorl, and clintonite are also present. The deposit is extremely difficult to mine, and virtually all spinel occur encased entirely in garnet or vesuvianite. It is extremely rare to see otherwise. Only a handful of localities worldiwde produce blue spinel, with this being the best USA locale!
This specimen features a deep blue colored spinel group, which has been revealed through careful matrix prep. While the crystals are small, they have superb color and are nicely terminated for the locale. Quite a nice example of a Montana classic.
Thank you so much for viewing! Please message for any further information
(1.4 × 1.2 × 0.9 in - 3.5 × 3.0 × 2.2 cm) 1.7oz / 49g
ORDERS SHIP MONDAYS
Image 1 of 5
Image 2 of 5
Image 3 of 5
Image 4 of 5
Image 5 of 5