Heliotrope (mineral) | 電影影評網
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Themineralaggregateheliotropealsoknownasbloodstone,isacryptocrystallinemixtureofquartzthatoccursmostlyasjasper(opaque)orsometimesas ...
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From Wikipedia, the free encyclopedia
Mineral aggregate
Rough bloodstoneThe mineral aggregate heliotrope (from Ancient Greek ἥλιος (hḗlios) sun, and τρέπειν (trépein) to turn), also known as bloodstone or ematille, is a cryptocrystalline mixture of quartz that occurs mostly as jasper (opaque) or sometimes as chalcedony (translucent). The "classic" bloodstone is opaque green jasper with red inclusions of hematite. The red inclusions may resemble spots of blood, hence the name bloodstone.
The name heliotrope derives from various ancient notions about the manner in which the mineral reflects light. Such notions are described, for example, by Pliny the Elder (Nat. Hist. 37.165).[1]
Legends and superstitions[edit]Heliotrope was calle...
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