HED meteorites, light micrograph is a photograph by Science Photo Library which was uploaded on March 7th, 2014.
HED meteorites, light micrograph
HED meteorites. Polarised light micrograph of thin sections of two HED (howardite, eucrite and diogenite) meteorites recovered from Antarctica,... more
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HED meteorites, light micrograph
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Science Photo Library
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Photograph
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HED meteorites. Polarised light micrograph of thin sections of two HED (howardite, eucrite and diogenite) meteorites recovered from Antarctica, showing the crystalline structure. HED meteorites are a large group of meteorites believed to originate from the Vesta asteroid. QUE 97053 (left) and EET 90020 (right) are eucrites, crystallised lavas with the composition of basalt, the most common lava type on Earth. QUE97053 consists mostly of elongated gray crystals of feldspar (calcium aluminium silicate) and brightly coloured grains of pyroxene (magnesium iron silicate), the texture of which is consistent with crystallisation of molten magma. EET90020 has similar mineralogy but a recrystallised texture of equant grains formed by later heating. Eucrites like
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March 7th, 2014
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