MINERALS INDEX
Thorite |
| ThSiO4 |
| Tetragonal |
Dark-brown grains as much as half an inch in diameter that were identified as thorite by chemical tests were observed by Kemp (152) in pegmatite from the Trotter mine. They seem to be very scarce there.
In a personal communication Professor Kemp informed the author that the mineral was first recognized by Professor Groth, of Munich, on a visit to Franklin with him. Specimens in the Harvard collection that were given by Groth to Professor Wolff illustrate the occurrence. The thorite is largely altered to glassy orangite and is associated with tiny crystals of zircon in typical pegmatite. The orangite was easily soluble, with gelatinization, which, with its appearance, sufficiently identified it.
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© by Herb Yeates 1997-2006.
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page created: August 12, 2006 7:18 PM
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