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Complexity, Appeal of Apophyllite

BY ANTOINETTE RAHN

SPECIMEN SPOTLIGHT

As is often the case within the mineralogical universe, there is a lot of meaning related to names and naming conventions. It stands to reason this is the case, as it is the identity of an object and will remain in perpetuity, right? Yes and no. Enter apophyllite.

The meaning of the word apophyllite is actually a combination of the Greek words “apo,” which means to be off, and “phyllos,” which means leaf. Together it means to flake apart like a leaf, which is what occurs when apophyllite is heated and there is a significant loss of water within the composition.

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Rock & Gem November 2018, GEOLOGICAL GENESIS: Dating Mineral Deposits, A MODERN discovery in Silver valley, And More.....