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Moonstone cabochon. The most common moonstone is of the orthoclase feldspar mineral adularia, named for an early mining site near Mt. Adular in Switzerland, now the town of St. Gotthard. [1] [better source needed] A solid solution of the plagioclase feldspar oligoclase +/− the potassium feldspar orthoclase also produces moonstone specimens.
Well, the month of June means not one, not two, but three of the most gorgeous birthstones of the year: the classic pearl, the celestial moonstone and the ultra-rare alexandrite. These glam gems ...
Olivine basalt collected from the rim of Hadley Rille by the crew of Apollo 15. Moon rock or lunar rock is rock originating from Earth's Moon.This includes lunar material collected during the course of human exploration of the Moon, and rock that has been ejected naturally from the Moon's surface and landed on Earth as meteorites.
Sandakada Pahana, also known as Moonstone, is a unique feature of the architecture of ancient Sri Lanka. [ 1 ] [ 2 ] [ 3 ] It is an elaborately carved semi-circular stone slab, usually placed at the bottom of staircases and entrances.
Gemstones of the World revised 5th edition, 2013 by Walter Schumann ISBN 978-1454909538 Smithsonian Handbook: Gemstones by Cally Hall, 2nd ed. 2002 ISBN 978-0789489852 hide
The optical effect of adularescence in moonstone is typically due to adularia. [7] The largest documented single crystal of orthoclase was found in the Ural Mountains in Russia. It measured around 10 m × 10 m × 0.4 m (33 ft × 33 ft × 1 ft) and weighed around 100 tonnes (110 short tons). [8]
It may be limited to rocks found on Earth, or it may include planetary geology that studies the rocks of other celestial objects. Rocks are usually grouped into three main groups: igneous rocks, sedimentary rocks and metamorphic rocks. Igneous rocks are formed when magma cools in the Earth's crust, or lava cools on the ground surface or the seabed.
Moonstone, Colorado, a town in The Song of the Lark by Willa Cather; Moonstone (comics), the name of two Marvel Comics universe characters; Moonstone, a plot element in season 2 of The Vampire Diaries; Moonstone Opal, a plot element in Tangled The Series; Moonstone, a setting in Erin Hunter's Warriors story arc; Moonstone, an artifact in the ...
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