1) Calcium mineral 2) Iron mineral 3) Monoclinic mineral 4) Yttrium mineral
Found on
https://www.crosswordclues.com/clue/allanite
Allanite is a sorosilicate group of minerals within the broader epidote group that contain a significant amount of rare earth elements. The mineral occurs mainly in metamorphosed clay rich sediments and felsic igneous rocks. It has the general formula A2M3Si3O12[OH] where the A sites can contain large cations such as Ca2+, Sr2+, and rare earth ele...
Found on
http://en.wikipedia.org/wiki/Allanite
• (n.) A silicate containing a large amount of cerium. It is usually black in color, opaque, and is related to epidote in form and composition.
Found on
http://thinkexist.com/dictionary/meaning/allanite/
Al'lan·ite noun [ From T.
Allan , who first distinguished it as a species.]
(min.) A silicate containing a large amount of cerium. It is usually black in color, opaque, and is related to epidote in form and composition.
Found on
http://www.encyclo.co.uk/webster/A/57
Allanite is a silicate containing a large amount of cerium. It is usually black in colour, opaque, and is related to epidote in form and composition. It occurs as a minor constituent of many igneous rocks and is frequently associated with epidote. Found in some magnetic bodies. It has the formulae (Ce,Ca,Y)2(Al,Fe)3(SiO4) 3(OH) and a relative hardn...
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http://www.probertencyclopaedia.com/browse/HA.HTM
Orthite
Found on
http://www.translationdirectory.com/glossaries/glossary077.htm
(Calcium Rare Earth Aluminum Iron Silicate Hydroxide) Allanite, also known as `orthite` in Europe, is one of the most common rare earth minerals, which is somewhat of an oxymoron. Rare earth elements include many unusual and valuable metals. Up to 20% of allanite's weight could be composed of these rare earth elemen...
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https://www.encyclo.co.uk/local/23719
a member of the epidote group, a silicate of calcium, cerium, aluminum, and iron, occurring chiefly in brown-to-black masses or prismatic crystals.
Found on
https://www.infoplease.com/dictionary/allanite
No exact match found.
