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Nephrite

Nephrite is a variety of the calcium, magnesium, and iron-rich amphibole minerals tremolite, actinolite or ferro-actinolite (aggregates of which also make up one form of asbestos). The chemical formula for nephrite is Ca2(Mg, Fe)5Si8O22(OH)2. It is one of two different mineral species called jade. The other mineral species known as jade is jadeite, which…

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Absorption spectra
Vague line may be present at 500 nm, but rarely any lines. Rarely, in stones of exceptional gem quality, vague lines in the red part of the spectrum may be seen.
Birefringence
usually not detectable
Category
Inosilicate
Color
Translucent to opaque and often mottled. Light to dark green, yellow to brown, white, gray, black.
Crystal habit
massive
Crystal system
monoclinic

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Nephrite

Nodes88
Edges87
Triples363
Avg. degree1.98
Density0.022727
Components1

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Nephrite

Top relations

related to Further reading · 248
Nephrite → Abel Rémusat, Abuduwayiti, Acad, Acta Petrologica, Adamo, Alamas, Albert Saifer, American Anthropologist, American Museums, Amsterdam, Ancient, Anness Publishing, Archaeology Press, Art, Asia, Asian Earth Sciences, Association Française, Aufl, Australia, Av
related to Prehistoric and historic China · 29
Nephrite → BC, Black Jade, China, Chinese, During Neolithic, From, Hongshan, Inner Mongolia, Jade, Karakash, Khotan, Kingdom, Kuen-Lun, Lantian, Liangzhu, Liaoning, Ningshao, River, Rivers, Shaanxi
related to Prehistoric Taiwan and Southeast Asia · 23
Nephrite → BCE, Brunei, Cambodia, Carved, CE, East Asia, Eurasia, Filipinos, Indonesia, It, Malaysia, Maritime Jade Road, Participants, Philippines, Silk Road, Singapore, Some, Southeast, Taiwan, Taiwanese
related to Neolithic and Chalcolithic Europe · 19
Nephrite → Balkan, Balkans, BC, Bulgaria, Croatia, Early Neolithic, European, Greece, Italy, Jordanów, Late Chalcolithic, Late Neolithic, Poland, Romania, Sardinia, Serbia, Single, Such, Switzerland
related to Māori · 13
Nephrite → European, Greenstone Water, It, Māori, New Zealand, Ngāi Tahu, Te Wai Pounamu, The, The South Island, These, Treaty, Waitangi, Weapons
related to Name · 6
Nephrite → Ancient Greek, Greek, International Mineralogical Association, Latin, Spanish, The
related to Other names · 4
Nephrite → Beilstein, Besides, New Zealand, Tomb
Absorption spectra · 1
Nephrite → Vague line may be present at 500 nm, but rarely any lines. Rarely, in stones of exceptional gem quality, vague lines in the red part of the spectrum may be seen.
Birefringence · 1
Nephrite → usually not detectable
Category · 1
Nephrite → Inosilicate

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Important terminology

jade chinese new china ed also neolithic white london zealand culture canada stone known mineral māori asia jadeite york minerals

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
NephriteAbsorption spectraVague line may be present at 500 nm, but rarely any lines. Rarely, in stones of exceptional gem quality, vague lines in the red part of the spectrum may be seen.1.00infobox
NephriteBirefringenceusually not detectable1.00infobox
NephriteCategoryInosilicate1.00infobox
NephriteColorTranslucent to opaque and often mottled. Light to dark green, yellow to brown, white, gray, black.1.00infobox
NephriteCrystal habitmassive1.00infobox
NephriteCrystal systemmonoclinic1.00infobox
NephriteFormulaCa2(Mg,Fe)5Si8O22(OH)21.00infobox
NephriteFracturesplintery to granular1.00infobox
NephriteLusterdull1.00infobox
NephriteMohs scale hardness6.0 to 6.51.00infobox
NephriteOptical propertiesDouble refractive with anomalous aggregate reaction1.00infobox
NephritePleochroismnone1.00infobox
NephritePolish lustervitreous to greasy1.00infobox
NephriteRefractive index1.606 to 1.632+0.009 −0.0061.00infobox
NephriteSpecific gravity2.95+0.15 −0.051.00infobox
NephriteUltraviolet fluorescenceinert1.00infobox
Nephriteis avariety of the calcium0.90text

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