Is andalusite a rock or mineral?

Johnson Rutherford asked a question: Is andalusite a rock or mineral?
Asked By: Johnson Rutherford
Date created: Sat, Oct 16, 2021 2:02 AM
Date updated: Tue, May 24, 2022 7:45 AM


Top best answers to the question «Is andalusite a rock or mineral»

Andalusite is a common metamorphic mineral which forms under low pressure and low to high temperatures. The minerals kyanite and sillimanite are polymorphs of andalusite, each occurring under different temperature-pressure regimes and are therefore rarely found together in the same rock.


Those who are looking for an answer to the question «Is andalusite a rock or mineral?» often ask the following questions:

✨ What mineral is andalusite?

Andalusite is a naturally occurring alumino-silicate mineral commonly found in metamorphic rocks. It is a high-purity mineral composed of prismatic and anhydrous crystals. Containing up to 60% alumina, andalusite transforms into mullite at low temperatures of between 1,200°C and 1,550°C.

✨ Is actinolite a rock or mineral?

Actinolite, an amphibole mineral in the tremolite-actinolite series of calcium, magnesium, and iron silicates. The minerals in this series are abundant in regionally metamorphosed rocks, such as schists.

✨ Is albite a rock or mineral?

Albite is a very common mineral, and is an important rock-forming mineral. It takes a longer time for Albite to crystallize than the other feldspars. This enables Albite to form in large and well crystallized examples. Albite is also a common accessory mineral to many rare and unusual minerals.

Your Answer

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Is cerussite a rock or mineral?

Aragonite Group. Cerussite is a lead carbonate mineral, usually found in the oxidized zone of lead ore deposits. It is a very common weathering product of galena and other lead ore minerals.

Is cinnabar a rock or mineral?

Cinnabar is a hydrothermal mineral that precipitates from ascending hot waters and vapors as they move through fractured rocks.

Is clay a rock or mineral?

Clay minerals are an important group of minerals because they are among the most common products of chemical weathering, and thus are the main constituents of the fine-grained sedimentary rocks called mudrocks (including mudstones, claystones, and shales).

Is cordierite a mineral or rock?

Cordierite is a silicate mineral that is found in metamorphic and igneous rocks. It is typically blue to violet in color and is one of the most strongly pleochroic minerals.

Is dioptase a rock or mineral?

Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral. It is transparent to translucent. Its luster is vitreous to sub-adamantine.

Is dolomite a mineral or rock?

lə-/) is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg(CO3)2. The term is also used for a sedimentary carbonate rock composed mostly of the mineral dolomite. An alternative name sometimes used for the dolomitic rock type is dolostone.

Is emerald a mineral or rock?

Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium and/or sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds are highly included, so their toughness (resistance to breakage) is classified as generally poor.

Is epidote a rock or mineral?

Epidote is a silicate mineral that is commonly found in regionally metamorphosed rocks of low-to-moderate grade. In these rocks, epidote is often associated with amphiboles, feldspars, quartz, and chlorite. It occurs as replacements of mineral grains that have been altered by metamorphism.

Is feldspar a rock or mineral?

Feldspars are a group of rock-forming aluminium tectosilicate minerals, containing sodium, calcium, potassium or barium.

Is malachite a rock or mineral?

Malachite is a copper carbonate hydroxide mineral with 57.48% copper in the purest form, and its presence is an excellent exploration guide for discovery of new mineral deposits.

Is mica a rock or mineral?

Biotite mica Biotite mica can be easily identified by its dark brown to black colour that is a result of the high ferro-magnesium content of the mineral. It is a common rock forming mineral that is found in granite, syenite and other igneous rocks. It is also found in metamorphic rocks such as gneisses and schists.

Is moldavite a rock or mineral?

It was believed to have been formed after a meteorite impact by condensed rock vapors. It is part of the mineral group Tektite, a small family of natural glass rocks. Moldavite is sometimes claimed to be' the only known alien gemstone on Earth' or' the gemstone born from the stars. '

Is nepheline a rock or mineral?

Nepheline is an important feldspathoid mineral. It is white, grey or yellow in colour with a vitreous lustre and a poor cleavage. The name Nepheline comes from the Greek word nephele, which means “cloud,” because it becomes strongly clouded when put in strong acid. Nepheline only forms in silica-poor rocks.

Is opal a mineral or rock?

Opal is a mineraloid because it is amorphous hydrated silica. Despite its mineral-like properties, opal's chemical structure is hydrated with varied water concentration. Because of this variance, the stone's structure isn't fixed or organized and thus, qualifies as a mineraloid.

Is peridot a rock or mineral?

Peridot is the gem variety of the mineral olivine. Its chemical composition includes iron and magnesium, and iron is the cause of its attractive yellowish green colors. The gem often occurs in volcanic rocks called basalts, which are rich in these two elements.

Is pyrophyllite a rock or mineral?

Pyrophyllite is a phyllosilicate mineral composed of aluminium silicate hydroxide: Al2Si4O10(OH)2. It occurs in two forms (habits): crystalline folia and compact masses; distinct crystals are not known.

Is quartz a rock or mineral?

Quartz is the second most abundant mineral in Earth's crust after feldspar. It occurs in nearly all acid igneous, metamorphic, and sedimentary rocks. It is an essential mineral in such silica-rich felsic rocks as granites, granodiorites, and rhyolites.

Is sodalite a rock or mineral?

Sodalite is a scare mineral which was named in reference to its sodium content by a Glasgow chemist, Professor Thomas Thomson. It is formed in Nepheline syenites, phonolites, and related rock types; in metasomatized calcareous rocks, and cavities in ejected volcanic blocks.

Is topaz a rock or mineral?

Topaz is a crystalline mineral in the silicate group. It has a chemical formula of Al2SiO4(F,OH)2, and that “F,” fluorine, makes it an uncommon mineral. With a hardness of 8 and a variety of colors, topaz is a great choice for jewelry in any style and can even make for a unique center stone in an engagement ring.

Is baryte a mineral or a rock?

Baryte, barite or barytes (UK: /ˈbærʌɪt/, /ˈbɛəraɪt/) is a mineral consisting of barium sulfate (BaSO4). Baryte is generally white or colorless, and is the main source of the element barium. The baryte group consists of baryte, celestine (strontium sulfate), anglesite (lead sulfate), and anhydrite (calcium sulfate).

Is gypsum a mineral or a rock?

Gypsum is one of the more common minerals in sedimentary environments. It is a major rock forming mineral that produces massive beds, usually from precipitation out of highly saline waters.