- spectrolite
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a rare variety of labradorite feldspar, raning in colors from blue to red.
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spectrolite
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Spectrolite — is a hard and rare variety of labradorite feldspar. Spectrolite has a Mohs hardness between 6 and 6.5 and a specific gravity of 2.69 to 2.70. The variety is noted for iridescence of spectrum colours from blue to red. It is often cut as a lapidary … Wikipedia
Spectrolite — Labradorite Labradorite Catégorie IX : silicates Labradorite section poli … Wikipédia en Français
Ylamaa — Ylämaa 60° 47′ 55″ N 28° 00′ 30″ E / 60.79862, 28.00834 … Wikipédia en Français
Ylämaa — Géographie Pays Finlande Région Carélie du Sud Altitude … Wikipédia en Français
Plagioclase — A photomicrograph of a plagioclase crystal under cross polarized light. The plagioclase crystal shows a distinct banding effect called a Polysynthetic twinning. (unknown scale) General Category … Wikipedia
List of minerals — This is a List of minerals for which there are Wikipedia articles. Mineral variety names and mineraloids are to be listed after the valid minerals for each letter.For a complete listing (about 4,000) of all mineral names: List of minerals… … Wikipedia
Labradorite — ((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… … Wikipedia
Ylämaa — Kuntainfo fullname=Ylämaa status=municipality province=Southern Finland region=South Karelia district=? citymanager=? languages=Finnish arearank=? area=409.31 arealand= poprank=? popdate=2003 pop=1,505 popchange= popdensity=4.0 urbanisation=… … Wikipedia
Ammolite — Infobox mineral name = Ammolite category = fossilized, mineralized Ammonite shell boxwidth = boxbgcolor = imagesize = caption = Unprocessed sample of ammolite, a dragon skin pattern is apparent formula = CaCO3 aragonite polymorph, with minor… … Wikipedia
Carnatite — Labradorite Labradorite Catégorie IX : silicates Labradorite section poli … Wikipédia en Français
