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Earth Sciences question: What is the luster of feldspar? Depending on the variety, feldspars can range from adamantine to glassy in luster.
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wiki.answers.com/Q/What_is_the_luster_of_feldspar
wiki.answers.com/Q/What_is_the_luster_of_feldspar
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Geology question: Is the luster of feldspar considered metallic? Luster of Feldspar The luster of feldspar is considered vitreous. ... Is feldspar metallic? Feldspar metallic or non metallic? What minerals are metallic luster? Is the luster of feldspar nonmetallic? What is the mineral feldspar's luster? Does feldspar have...
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wiki.answers.com/Q/Is_the_luster_of_feldspar_considered...
wiki.answers.com/Q/Is_the_luster_of_feldspar_considered_metallic
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The word feldspar literally translates to: ... All feldspars have certain physical characteristics in common: they have 2 good easily developable cleavages, one which is perfect, usually known as the basal plane. Here, the luster is pearly and the from the cleavage cracks parallel to this face, brilliant iridescent colors...
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www.rockhounds.com/rockshop/feldspar.html
www.rockhounds.com/rockshop/feldspar.html
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The feldspar group is a fairly large group with nearly 20 members recognized, ... They are slightly hard at around 6, and have an average density at 2.55 to 2.76. They have a rather dull to rarely vitreous luster. Crystals tend to be blocky. Some feldspars may be triboluminescent. They have two directions of cleavage at...
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www.galleries.com/minerals/Silicate/FELDSPAR.htm
www.galleries.com/minerals/Silicate/FELDSPAR.htm
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LUSTER/COLOR: Metallic Luster/Silver ... LUSTER/COLOR: Metallic/Very Pale Brass yellow ... REMARKS: This is a crystal cluster of the feldspar, Microcline...
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comp.uark.edu/~sboss/vrockbag.htm
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Our transcription: The way in which of the minerals reflect light is the physical property called "luster". ... Feldspar has a dull luster. ... It doesn't shine at all. But compare that to muscovite, which has a glassy luster.
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walrus.wr.usgs.gov/infobank/programs/html/school/moviep...
walrus.wr.usgs.gov/infobank/programs/html/school/moviepage/11.01.17.html
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Sunstone is a species of plagioclase called "oligoclase" or known sometimes in the jewelry industry as "adventurine feldspar". It gets is shiller in the same way that labradorite does, but the background color is brown to orange, and the composition is full of small hematite crystals that give it additional sparkle.
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www.theimage.com/gemstone/feldspar/feldspar.html
www.theimage.com/gemstone/feldspar/feldspar.html
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Mineral Information on the WEB ... The generic term "feldspar" comes from the Germanic term "feldt spat", meaning "mineral with prominent cleavage from the field". It was a prime constituent of many of the rocks over turned by farmers while plowing their fields.
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www.theimage.com/mineral/feldspar/index.htm
www.theimage.com/mineral/feldspar/index.htm
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Luster- The way light is reflected from a newly exposed surface. Described as either metallic or nonmetallic. Some examples of minerals with metallic luster are pyrite, galena and magnetite. Some examples of minerals with nonmetallic luster are calcite, quartz and feldspar.
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regentsprep.org/Regents/earthsci/minerals.htm
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