Three Occurrences of Oregon Sunstone

Three Occurrences of Oregon Sunstone

This paper incorporates trip findings and previous GIA research to provide a comparative analysis of the gem materials and their geological context and history. We also hope to initiate research that will answer some open questions: * Are all the eastern Oregon sunstone occurrences the same age? * H...

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Veröffentlicht in:Gems & Gemology 2013-09, Vol.49 (3), p.162
Hauptverfasser: Pay, Duncan, Weldon, Robert, McClure, Shane, Schumacher, Kevin
Format: Artikel
Sprache:eng
Schlagworte:
Comparative studies
Copper
Crystals
Geology
Jewelry
Lava
Magma
Mines
Mining
Precious stones
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Beschreibung
Zusammenfassung:This paper incorporates trip findings and previous GIA research to provide a comparative analysis of the gem materials and their geological context and history. We also hope to initiate research that will answer some open questions: * Are all the eastern Oregon sunstone occurrences the same age? * How do sunstone occurrences correlate with the local geology? * How did the very uneven color distribution develop in fractured crystals? * Are sunstones from each of the three mines distinguishable?
ISSN:0016-626X
2376-4473
DOI:10.5741/GEMS.49.3.162