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・ Carmine Rosato
・ Carmine Rosato Family
・ Carmine Schiavone
・ Carmine Sciandra
・ Carmine Sessa
・ Carmine Starnino
・ Carmine Tramunti
・ Carmine Vingo
・ Carmine Zoccali
・ Carmine, Texas
・ Carminho
・ Carmini
・ Carminia Ammia
・ Carminibotys
・ Carminic acid
Carminite
・ Carmino Ravosa
・ Carminodoris
・ Carminodoris boucheti
・ Carminodoris spinobranchialis
・ Carminow
・ Carminow Cross
・ Carminucci
・ Carmiooro NGC
・ Carmit
・ Carmit Bachar
・ Carmita Jiménez
・ Carmo
・ Carmo Church (Braga)
・ Carmo Convent (Lisbon)


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Carminite : ウィキペディア英語版
Carminite

Carminite (PbFe3+2(AsO4)2(OH)2〔http://pubsites.uws.edu.au/ima-cnmnc〕) is an anhydrous arsenate mineral containing hydroxyl. It is a rare secondary mineral that is structurally related to palermoite (Li2SrAl4(PO4)4(OH)4).〔 Sewardite (CaFe3+2(AsO4)2(OH)2) is an analogue of carminite, with calcium in sewardite in place of the lead in carminite. Mawbyite is a dimorph (same formula, different structure) of carminite; mawbyite is monoclinic and carminite is orthorhombic.〔 It has a molar mass of 639.87 g.〔 It was discovered in 1850〔 and named for the characteristic carmine color.〔〔
== Structure ==
Carminite belongs to the orthorhombic crystal class (2/m 2/m 2/m) and has space group C ccm or C cc2.〔Finney J J (1963) American Mineralogist 48: 1-13〕 The structure consists of linked octahedra of iron surrounded by oxygen and hydroxyl which are aligned parallel to the c axis. They are connected together in the direction of the an axis by arsenate tetrahedra (arsenic surrounded by 4 oxygen). Coordination about the lead atoms is eight-fold.〔 The edges of the unit cell have lengths a = 16.59 Å, b = 7.58 Å and c = 12.295 Å. There are 8 formula units in each unit cell (Z = 8).〔

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