A member of the Olivine group, this mineral is not a very common occurrence at Wessels. The brown crystals here are prismatic in habit and have very good to matte luster, and the Tephroite from this locality is considered by many to be best of species. The crystals range up to an amazing 1 cm in length, and may reach .3 cm across for the larger crystals. One end of the specimen is contacted, but that allows you to see just how gemmy and glassy the Tephroites are internally. An important, and quality, specimen of a very rare crystallized species. Ex. Charlie Key.
Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
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