Play+of+colors
71Schiller — Schil ler, n. [G., play of colors.] (Min.) The peculiar bronzelike luster observed in certain minerals, as hypersthene, schiller spar, etc. It is due to the presence of minute inclusions in parallel position, and is sometimes of secondary origin …
72Schiller spar — Schiller Schil ler, n. [G., play of colors.] (Min.) The peculiar bronzelike luster observed in certain minerals, as hypersthene, schiller spar, etc. It is due to the presence of minute inclusions in parallel position, and is sometimes of… …
73opal — noun Etymology: Latin opalus, from Greek opallios, ultimately from Sanskrit upala stone, jewel Date: circa 1586 a usually amorphous mineral that is a hydrated silica softer and less dense than quartz and typically with definite and often marked… …
74Mineral — For other uses, see Mineral (disambiguation). An assortment of minerals. A mineral is a naturally occurring …
75Feldspar — is the name of a group of rock forming minerals which make up as much as 60% of the Earth s crust.Feldspar. [http://www.ima na.org/about industrial minerals/feldspar.asp What is Feldspar?] Industrial Minerals Association. Retrieved on July 18… …
76Labradorite — ((Ca,Na)(Al,Si)4O8), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. It is usually defined as having %An (anorthite) between 50 and 70. The specific gravity ranges from 2.71 to 2.74. The streak is white, like… …
77Solomon Islands skink — Solomon Islands skink …
78Bufotenin — Systematic (IUPAC) name …
79Hyalite — A sample of hyalite …
80HeroClix — jeu de figurines Éditeur Topps Date de 1re édition 2002 Autres éditeurs Tilsit Asmodée Mécanisme affrontement …
