danburite


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danburite

[′dan·bə‚rīt]
(mineralogy)
CaB2(SiO4)2 An orange-yellow, yellowish-brown, grayish, or colorless transparent to translucent borosilicate mineral with a feldspar structure crystallizing in the orthorhombic system; it resembles topaz and is used as an ornamental stone.
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The other gemstones mined in the valley are beryl (pink, blue and multicolored), danburite and kunzite spodumene.
Albite Arsenopyrite Azurite Beryl Biotite Bismuth Calcite Cassiterite Chalcopyrite Danburite Dravite Ferberite Ferro-axinite Fluorapatite Fluorite Garnet (almandine?
In addition, multicolored tourmaline, pink-yellow-green spodumene, lithian muscovite and danburite occurred in this pocket which reportedly measured at least 1.
This year he wowed the tent-browsers (both expert and novice, I would imagine) with very large crystal groups of what's surely the loveliest danburite yet to emerge from the Aurora mine, Charcas, San Luis Potosi, Mexico.
Associated minerals are: danburite, thorite, fluorite, tourmaline and a cancrinite-group mineral.
The Smithsonian put in a case of very fine Mexican minerals including such things as stibiconite, amethyst, buergerite, malachite pseudomorphs after azurite, danburite, rare wurtzite and polybasite.
Josie Scripps, the delightful San Diego collector, displayed tourmalines and danburite from a pegmatite in Baja California, Mexico.
Exciting recent discoveries include epidote and Japan-law twinned quartz from Pampa Blanca, Peru; danburite and boracite from the Alto Chapare distr ict, Bolivia; vivianite and ludlamite from Morococala, Bolivia; cassiterite from Viloco, Bolivia; and new minerals from Chile including szenicsite, lemanskiite, cristelite, and gordaite.
It is the type locality for povondraite and magnesioriebeckite, and has also produced abundant sharply-formed, doubly-terminated danburite crystals, the world's largest boracite crystals, and interesting specimens of ericaite, dolomite, magnesite, and several other species.
A number of good specimens of bicolored elbaite and schorl were recovered, along with a number of other rare and interesting minerals including clinobisvanite, stibiotantalite, danburite, hambergite, pyrochlore, and synchysite (DeVito and Ordway, 1984).
The mine has produced an interesting suite of minerals in recent years, including pale blue to green aquamarine, alpine-like smoky quartz crystals, spessartine, danburite, columbite, cassiterite, helvite, and numerous phosphates including apatite, lithiophilite, purpurite, herderite, strengite, phosphosiderite, hureaulite, robertsite, eosphorite, frondelite and mitridatite (A.
For example, his collection contained more than 60 Charcas danburites, 120 Mapimi adamites, and 90 Naica fluorites.