1. Large Almandine Crystals from Mt. Marie, Paris, Oxford County, Maine.
- Author
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Jacobson, Mark Ivan, Nizamoff, James W., and Durgin, Dennis Paul
- Subjects
CRYSTALS ,GEMS & precious stones ,GARNET ,GEOLOGICAL surveys ,METAMORPHIC rocks - Abstract
Iconic Specimens Doubtless, these large almandine garnets will become known as classics, similar to the almandine crystals from Russell, Massachusetts. Large, sharply formed almandine crystals from Mt. Marie were first recovered in May 2017. The pegmatite units, exposed between overburden-concealed areas, are sufficiently discontinuous to prevent determining whether the mountain crest is one pegmatite or a swarm of several pegmatites. These garnets are late crystallization products, which formed near the end stage of the primary pegmatite crystallization, as indicated by the crystals' location in contact with quartz core segments, which usually (but not always) is the last crystallized part of the pegmatite (London [13]; Roering [16]). [Extracted from the article]
- Published
- 2023
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