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| | JADE main |
 | | Jadeite is a sodium-rich aluminous pyroxene; nephrite is a fine-grained, calcium-rich, magnesium, iron, aluminous amphibole. |
 | | Nephrite and jadeite jade ranges in color from a somewhat greasy-appearing, white ("mutton fat jade") to dark and light shades of green, gray, blue-green, lavender, yellow, orange, brown, reddish-brown, and fl. |
 | | Nephrite jade, which is also a product of metamorphism (and fluid infiltration), does not apparently require the very special P-T conditions of jadeite and is much more widespread. |
| www.geo.utexas.edu /courses/347k/redesign/gem_notes/jade/jade_main.htm (1098 words) |
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