Ancylite is a group of hydrous
strontium
Strontium is the chemical element with the symbol Sr and atomic number 38. An alkaline earth metal, strontium is a soft silver-white yellowish metallic element that is highly chemically reactive. The metal forms a dark oxide layer when it is ex ...
carbonate minerals containing
cerium,
lanthanum and minor amounts of other
rare-earth elements. The chemical formula is with ancylite-Ce enriched in cerium and ancylite-La in lanthanum.
[http://webmineral.com/data/Ancylite-(Ce).shtml Webmineral data Ancylite-Ce.][http://www.handbookofmineralogy.org/pdfs/ancylitela.pdf Handbook of Mineralogy.]
Ancylite was first described in 1899 for an occurrence in the Narsarsuk
pegmatite
A pegmatite is an igneous rock showing a very coarse texture, with large interlocking crystals usually greater in size than and sometimes greater than . Most pegmatites are composed of quartz, feldspar, and mica, having a similar silicic com ...
in west
Greenland and named from the grc, αυκιλος for ''curved'' in reference to its rounded or distorted crystal form.
[http://www.mindat.org/min-216.html Mindat.]
References
Carbonate minerals
Strontium minerals
Lanthanide minerals
Orthorhombic minerals
Minerals in space group 62
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