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Ch. 8: Spodumene (Hiddenite), Smaragdite, Iolite, ... Lapis Lazuli

Ch. 8: Spodumene (Hiddenite), Smaragdite, Iolite, ... Lapis Lazuli Page of 364 Ch. 9: The Feldspar Group, including Amazonite, Moonstone, Sunstone, etc. Text size:minus plus Restore normal size   Mail page  Print this page
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Lapis lazuli has been shown to be, not a definite mineral, but a mixture of a colorless and a blue substance, the latter (the min­eral hauynite), predominating. The yellow spots of so-called gold are really iron pyrites. It was the sapphire of the ancients. Its hardness varies from 5 to 5.5 and its specific gravity is 2.4. The finest is brought over from Persia, but it is also found in Siberia, Tartary, China, and Thibet.
Ch. 8: Spodumene (Hiddenite), Smaragdite, Iolite, ... Lapis Lazuli Page of 364 Ch. 9: The Feldspar Group, including Amazonite, Moonstone, Sunstone, etc.
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