You are seeing Ask web results for ANDALUSITE.
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Andalusite - Wikipedia, the free encyclopedia
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THE MINERAL ANDALUSITE ... Andalusite is a polymorph with two other minerals; kyanite and sillimanite. A polymorph is a mineral that shares the same chemistry but a different crystal structure with another, or other, minerals. A unique variety of andalusite is called "chiastolite".
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Andalusite is named after Andalusia, the province of Spain where it was first discovered. Andalusite is pleochroic, i.e. it shows different colours in different directions. When cutting most pleochroic gemstones, such as iolite and tanzanite, the trick is to minimise the pleochroism and maximise the single best colour.
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Sillimanite Group . Andalusite-Kanonaite Series . ... Classification of Andalusite ... Occurrences of Andalusite...
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Andalusite is a strongly pleiochroic gemstone, meaning it displays different colors when viewed from different directions. While it is a strikingly beautiful gem, it is largely unknown by the gem buying public. Buy fine andalusite online at GemSelect ... You Selected: Andalusite; Clear Selection...
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GRapi = 0 (Gamma Ray American Petroleum Institute Units); Andalusite is Not Radioactive ... General Andalusite Information ... Andalusite Image...
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Andalusite or Cross Stone Chiastolite Jewelry including Pendants, Necklaces, Bracelets. Legends, Mysticism and Science on the Andalusite gemstone. ... Andalusite is generally brown in color, usually opaque though sometimes semi-transluscent. In gem grade with a Cross, Andalusite is called Chiastolite, Cross Stone or...
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Mineral Information on the WEB ... The name, Andalusite, comes from the Spanish local Andalusia. It is one of three polymorphs of Aluminum Silicate, the other two being Sillimanite, and Kyanite. They are related through their pressure and temperature of formation...
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Andalusite information, Andalusite jewelry, Andalusite gems. ... Andalusite is a strongly pleiochroic gem, which means that is has different colors when viewed from different directions. While it is a strikingly beautiful gem, is largely unknown by the gem buying public. ...
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Polymorphs : Kyanite and Sillimanite ; Andalusite is created in temperatures from 250-800 degrees C and pressures from 0 to 4 kbar. Flourescens : weakly green, green, yellowish green. ... A small red andalusite crystal from Umeå. The andalusite crystal is the red square at the right of the biotite flake.
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