1) An ore of tantalum 2) Beautiful stone 3) Cut mineral 4) Decorative stone 5) Gemstone mineral 6) Gemstone 7) Jewel mineral 8) Jewel 9) Manganese mineral 10) Mineral gemstone 11) Mineral jewel 12) Mineral 13) Orthorhombic mineral 14) Polished mineral 15) Polished jewel 16) Precious gemstone 17) Prized mineral
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https://www.crosswordclues.com/clue/tantalite
1) Ore
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https://www.crosswordclues.com/clue/tantalite
The mineral group tantalite [(Fe, Mn)Ta2O6] is the primary source of the chemical element tantalum. It is chemically similar to columbite, and the two are often grouped together as a semi-singular mineral called coltan or `columbite-tantalite` in many mineral guides. However, tantalite has a much greater specific gravity than columbite (8.0+ com.....
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http://en.wikipedia.org/wiki/Tantalite
• (n.) A heavy mineral of an iron-black color and submetallic luster. It is essentially a tantalate of iron.
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http://thinkexist.com/dictionary/meaning/tantalite/
tantalum-rich variety of the mineral columbite (q.v.) with the chemical formula (Fe,Mn)(Ta,Nb)2O6. Tantalite is the principal ore of the metal ... [2 related articles]
Found on
http://www.britannica.com/eb/a-z/t/11
Tan'ta·lite noun [ Confer French
tantalite .]
(Min.) A heavy mineral of an iron-black color and submetallic luster. It is essentially a tantalate of iron.
Found on
http://www.encyclo.co.uk/webster/T/10
Tantalite is a heavy mineral of an iron-black colour and sub-metallic lustre. It is essentially a tantalate of iron. Tantalite is formed in igneous rocks, especially granite pegmatite, and in placer deposits. It is associated with amblygonite, apatite, beryl, cassiterite, feldspar, quartz, spodumene and tourmaline. Tantalite is the main ore of tant...
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http://www.probertencyclopaedia.com/browse/HT.HTM
[
n] - a mineral consisting of tantalum oxide of iron and manganese that occurs with niobite or in coarse granite
Found on
http://www.webdictionary.co.uk/definition.php?query=tantalite
noun a mineral consisting of tantalum oxide of iron and manganese that occurs with niobite or in coarse granite; an ore of tantalum
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https://www.encyclo.co.uk/local/20974
No exact match found.
