| 词条 | Carletonite |
| 释义 |
| name = Carletonite | boxwidth = | boxbgcolor = | image = Carletonite-20263.jpg | imagesize = 280px | alt = | caption = Carletonite, Poudrette quarry, Mont Saint-Hilaire, Montérégie, Quebec, Canada. | category = Phyllosilicate | formula = KNa4Ca4(CO3)4Si8O18(F,OH)·(H2O) | molweight = | strunz = 9.EB.20 | system = Tetragonal | class = Ditetragonal dipyramidal (4/mmm) H–M symbol: (4/m 2/m 2/m) | symmetry = P4/mbm | unit cell = a = 13.17 Å, c = 16.69 Å; Z = 4 | colour = Colourless, light blue, dark blue, or pink | color = | habit = Prismatic crystals, massive | twinning = | cleavage = Perfect on {001}, good on {110} | fracture = Conchoidal | tenacity = Brittle | mohs = 4 - {{frac|4|1|2}} | lustre = Vitreous | streak = White | diaphaneity = Transparent to translucent | gravity = 2.45 | density = | polish = | opticalprop = Uniaxial (-) | refractive = nω = 1.521 nε = 1.517 | birefringence = δ = 0.004 | pleochroism = Weak; O = pale blue; E = pale pinkish brown | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = [1][2][3][4] }} Carletonite is a rare silicate mineral with formula KNa4Ca4(CO3)4Si8O18(F,OH)·(H2O). It is a phyllosilicate and a member of the apophyllite group. Its tetragonal crystals are a translucent blue, white, colorless or pink with a vitreous to dull lustre. It has a density of 2.45 and a hardness of 4-4.5. It was discovered by G.Y Chao and named for the school he attended, Carleton University of Ottawa.[5] It was first described in 1969 for an occurrence at Mont Saint-Hilaire, Quebec. The type locality at Mont Saint–Hilaire is the only reported occurrence.[2][3] It occurs in hornfels and siliceous marble xenoliths within and adjacent to a nepheline syenite intrusion. It occurs in association with quartz, narsarsukite, calcite, fluorite, ancylite, molybdenite, leucosphenite, lorenzenite, galena, albite, pectolite, apophyllite, leifite, microcline and arfvedsonite.[2] References1. ^[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Carletonite Mineralienatlas] {{commons}}{{silicate-mineral-stub}}2. ^1 2 Handbook of Mineralogy 3. ^1 Mindat.org 4. ^Webmineral data 5. ^Carletonite is a rare mineral found only in Mt Saint-Hilaire, Quebec, Canada. 3 : Phyllosilicates|Carbonate minerals|Tetragonal minerals |
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