Gemstones and Their Origins /
Each gem deposit-whether of primary origin in the parent rocks; or secondary as alluvial placers in valley floors, river gravels, or the sand of oceanic shelves presents an eloquent chronicle of the Earth's life story. It reveals to the expert the prodigious processes which formed the present...
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Main Author: | |
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Format: | Electronic eBook |
Language: | English |
Published: |
Boston, MA :
Springer US,
1990.
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Subjects: | |
Online Access: |
Full text (Wentworth users only) |
Local Note: | ProQuest Ebook Central |