Joined: Fri Feb 24, 2006 1:20 am Posts: 2756 Location: Southern California, U.S.A.
Wardite. Go with "t"
A mineral of gemological interest mainly for its occurrence in variscite, where it resembles eyes because of its concretionary form. It's an hydrous aluminum phosphate. Most known occurrences in that association are in Utah, U.S.A.
Joined: Fri Feb 24, 2006 1:20 am Posts: 2756 Location: Southern California, U.S.A.
Tektite. Go with "t"
A natural siliceous glass of meteoritic origin found as loose, pitted, rounded fragments in various parts of the world. They have been considered of great mystical importance in many cultures for millennia. In Sanskrit they were known as "agni mani," which translates roughly to "fire pearl." The only type that seems to be of current gemological significance are Moldavites.
Joined: Fri Feb 24, 2006 1:20 am Posts: 2756 Location: Southern California, U.S.A.
We're going to run out of Z's soon
Zinc spinel (same as gahnite). Go with "l". A rare form of spinel found in skarns, in which zinc has replaced magnesium. Semitransparent to opaque, greenish, yellowish, blue, brown and gray. Seldom used as a gem; S.G. and R.I. higher than gahnospinel.
Joined: Fri Feb 24, 2006 1:20 am Posts: 2756 Location: Southern California, U.S.A.
Making it tough with X eh? OK.
Xanthite. Go with X.
A name for yellowish to yellowish-brown vesuvianite from Amity, N.Y., with no particular distinguishing characteristics from other vesuvianite. (Thank heavens it's not from Amityville -- the horror!)
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