Gemmology
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Andesine

A variety of albite; plagioclase feldspar with an albite:anorthite molar ratio ranging from 50:50 to 70:30.

See:
Andesine — specimen 0305
Andesine — specimen 0305, photo © NMNHS

Material from ‘Repository’

13 specimens: 0305 — 0.41 ct, no locality data; 0306 — 0.41 ct, no locality data; 0129 — 0.43 ct, no locality data; 0410 — 0.42 ct, no locality data; 0331 — 1.34 ct, Democratic Republic of the Congo; 0320 — 1.28 ct, Democratic Republic of the Congo; 0726 — 0.44 ct, no locality data; 0727 — 0.41 ct, no locality data; 0267 — 1.54 ct, no precise locality [Africa]; 0342 — 1.57 ct, no precise locality [Africa]; 0345 — 5.90 ct, Democratic Republic of the Congo; 0278 — 0.76 ct, no precise locality [Africa]; 0349 — 2.35 ct, no precise locality [Africa].


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