Luster describes the means light reflects off of the surface ar of the mineral. You can describe diamonds as sparkly or pyrite together shiny. But mineralogists have actually special state to explain luster. They first divide minerals into metallic and non-metallic luster. Mineral that are opaque and shiny, choose pyrite, are claimed to have actually a “metallic” luster. Minerals with a “non-metallic” luster execute not look like metals. There space many species of non-metallic luster. Six are explained in Table.

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Minerals with Non-Metallic LusterNon-Metallic LusterAppearance
AdamantineSparkly
EarthyDull, clay-like
PearlyPearl-like
ResinousLike resins, such together tree sap
SilkySoft-looking with lengthy fibers
VitreousGlassy

Can you enhance the minerals in number with the correct luster indigenous Table without looking at the caption?


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(A) Diamonds have an adamantine luster. This minerals are transparent and highly reflective. (B) Kaolinite is a clay with a dull or earthy luster. (C) Opal’s luster is greasy. (D) Chalcopyrite, choose its cousin pyrite, has actually metallic luster. (E) Stilbite (orange) has a resinous luster. (F) The white ulexite has actually silky luster. (G) Sphalerite has actually a submetallic luster. (H) This Mayan artifact is sculpted from jade. Jade is a mineral v a waxy luster.


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