1) Aphanitic rock
Found on
https://www.crosswordclues.com/clue/basanite
Basanite t is an igneous, volcanic (extrusive) rock with aphanitic to porphyritic texture. The mineral assembly is usually abundant feldspathoids (nepheline or leucite), plagioclase, and augite, together with olivine and lesser iron-titanium oxides such as ilmenite and magnetite-ulvospinel; minor alkali feldspar may be present, as illustrated by t...
Found on
http://en.wikipedia.org/wiki/Basanite
• (n.) Lydian stone, or black jasper, a variety of siliceous or flinty slate, of a grayish or bluish black color. It is employed to test the purity of gold, the amount of alloy being indicated by the color left on the stone when rubbed by the metal.
Found on
http://thinkexist.com/dictionary/meaning/basanite/
extrusive igneous rock that contains calcium-rich plagioclase feldspar (usually labradorite or bytownite), feldspathoid (usually nepheline or ...
Found on
http://www.britannica.com/eb/a-z/b/27
<chemical> Lydian stone, or black jasper, a variety of siliceous or flinty slate, of a grayish or bluish black colour. It is employed to test the purity of gold, the amount of alloy being indicated by the colour left on the stone when rubbed by the metal. ... Origin: L. Basanites lapis, Gr. The touchstone: cf. F. Basanite. ... Source: Webster...
Found on
http://www.encyclo.co.uk/local/20973
Bas'a·nite noun [ Latin
basanites lapis, Greek
ba`sanos the touchstone: confer French
basanite .]
(Min.) Lydian stone, or black jasper, a variety of siliceous or flinty slate, of a grayish or bluish black color. It is employed to test the purity of gold, the amount of al...
Found on
http://www.encyclo.co.uk/webster/B/18
Basanite (Lydian stone, touchstone or black jasper) is a smooth, black siliceous mineral. It is employed to test the purity of gold, the amount of alloy being indicated by the colour left on the stone when rubbed by the metal.
Found on
http://www.probertencyclopaedia.com/browse/HB.HTM
No exact match found.
