andalusite

It's an important addition to the olivenite group, and isostructural with andalusite.

The United States gets 100 percent of its andalusite from South Africa.

The mineral gosseletite, a phase of manganian andalusite, is named after him.

(If the temperature is below 750 C there will be andalusite instead of sillimanite)

Sillimanite is one of three alumino-silicate polymorphs, the other two being andalusite and kyanite.

Improved andalusite recovery process developed.

Typical associated minerals include: kyanite, andalusite, topaz, mica and quartz.

It occurs commonly as an alteration product of corundum, andalusite and other aluminous minerals.

Characteristic minerals include andalusite, biotite and cordierite.

The mineral chiastolite is a variety of andalusite with the chemical composition AlSiO.

Close to the contact with the "transitional gneiss" first the andalusite isograd is reached, followed by the cordierite isograd.

These minerals, known as index minerals, include sillimanite, kyanite, staurolite, andalusite, and some garnet.

Kyanite is a member of the aluminosilicate series, which also includes the polymorph andalusite and the polymorph sillimanite.

Waterford, over proposed andalusite mining at Mount Leinster, near Borris, Co.

This formation contains most of the world's reserves of minerals such as andalusite, chromium, fluorspar, platinum and vanadium.

Kyanite is triclinic, while andalusite and sillimanite are both orthorhombic and belong to the dipyramidal point group.

SiO), which occurs naturally as the minerals andalusite, kyanite and sillimanite which have different crystal structures.

The first public meeting to draw attention to local concern over the proposed mining for andalusite on Tomduff Mountain, near Borris, Co.

Contact metamorphism adjacent to the granite converted the shale into hornfels consisting of biotite, cordierite and andalusite.

It occurs with pyrophyllite, kyanite, andalusite, lazulite, augelite, alunite, kaolinite and quartz.

In areas around Georgetown, California, metamorphosed sediments contained andalusite and chiastolite in a graphite rich metasediment.

It occurs associated with staurolite, andalusite, sillimanite, talc, hornblende, gedrite, mullite and corundum.

In addition to impressive folds, the Devonian Littleton Formation also shows large pseudomorphs of sillimanite after andalusite.

There are also topaz, aquamarine, garnet, tourmaline, zircon, amethyst, scapolite, andalusite, and others, each with its own special qualities.

Almandine occurs in metamorphic rocks like mica schists, associated with minerals such as staurolite, kyanite, andalusite, and others.