- Milarite on Adularia
- Valenciana Mine, Guanajuato, Mexico
- Thumbnail, 1.9 x 1.8 x 1.7 cm
- Ex. Shields and Frances Flynn
Valenciana Mine is famous historically for the porcelain-like crystals of fine feldspar, termed adularia. This specimen is noteworthy because it features a sharp, lustrous shiny milarite crystal with great color, AND on a well balanced matrix. Most specimens from this location come off matrix. They were not realized as having much value in the time they were found, sadly (1970s into the early 1980s), and few were even saved to begin with. A sharp crystal like this, 6 mm across, on contrasting white matrix — this is a thing of rarity today. And, luckily, it is also pretty with the contrast.