
1) Magnesium mineral 2) Meerschaum 3) Mineral
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https://www.crosswordclues.com/clue/sepiolite

1) Meerschaum
Found on
https://www.crosswordclues.com/clue/sepiolite

Sepiolite is a clay mineral, a complex magnesium silicate, a typical formula for which is Mg4Si6O15(OH)2·6H2O. It can be present in fibrous, fine-particulate, and solid forms. It was first described in 1847 for an occurrence in Bettolino, Baldissero Canavese, Torino Province, Piedmont, Italy. The name comes from a perceived resemblance of the mat...
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http://en.wikipedia.org/wiki/Sepiolite

• (n.) Meerschaum. See Meerschaum.
Found on
http://thinkexist.com/dictionary/meaning/sepiolite/

(German: `sea-foam`), a fibrous hydrated magnesium silicate, Mg4Si6O15(OH)26H2O, that is opaque and white, grey, or cream in colour. It may resemble ... [4 related articles]
Found on
http://www.britannica.com/eb/a-z/s/65

See meerschaum.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Se'pi·o·lite` noun [
Septa +
-lite .]
(Min.) Meerschaum. See
Meerschaum .
Found on
http://www.encyclo.co.uk/webster/S/69
No exact match found.