The name sphalerite is derived from a Greek word meaning "treacherous," an allusion to the ease with which the dark-coloured, opaque varieties are mistaken for galena (a valuable lead ore).
Be clear that there are transparent and opaque varieties in all colours of glass paint, so check carefully you do have the correct effect, as well as colour when you buy, its not cheap, if you get it wrong.
For animals with opaque bodies, a variety of indirect, non-imaging methods have been devised to deduce heart activity and circulation patterns.
Depending on chemical composition, crystals can be translucent to nearly opaque, with a wide variety of colours: colourless, white, yellowish, orange, flesh red, pink and green (Palache et al., 1951 ▶, and references therein).
Raising capital requirements is a good idea, since banking of any kind — not just the opaque and complex Wall Street variety — is risky.
Some exhibit an orange translucency, while the coarser varieties are opaque.
Jasper, opaque, fine-grained or dense variety of the silica mineral chert that exhibits various colours.
The darkness comes with great variety, from an opaque, inky blue to a moonlit silver that flattens the familiar landscape into an exotic silhouette.
My paper's insights hold not only for sustainability standards but also for a variety of other opaque fields in which standard setters aim to achieve certain goals (including education, financial stability, health care, traffic security, and public service).
What's distinctive about these photos is their variety, ranging from puckishly opaque portraiture to three panels showing face-like images arising from the parts of a faucet, of a truck grille, of reflections in mottled glass.
