| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Mexico > Microcline (Manebach Law Twin) |
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| DESCRIPTION: | No. 69884 |
| Mineral: | Microcline (Manebach Law Twin) |
| Locality: | Sierra de Palo Dulce, Xaltianguis, Guerrero, Mexico |
| Description: | Prismatic white microcline crystals with tan-colored etched outer surfaces. The microcline crystals are twinned following the Manebach Law of feldspar twinning with the twin plane running through the center of the largest microcline crystals. Ex. John Geiges collection #486, acquired in 1997 from D. Beals |
| Overall Size: | 5.5x3x2 cm |
| Crystals: | 20-50 mm |
| Archived: | For reference only |
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