| 词条 | Phengite |
| 释义 |
| name = Phengite | category = Mica group | boxwidth = | boxbgcolor = | image = Phengite-002MS.jpg | imagesize = 260px | caption = | formula = K(AlMg)2(OH)2(SiAl)4O10 | molweight = | strunz = | dana = | symmetry = | unit cell = | color = | habit = | system = | lattice = | twinning = | cleavage = | fracture = | tenacity = | mohs = | luster = | refractive = | opticalprop = | birefringence = | pleochroism = | streak = | gravity = | density = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = | other = | references = }}Phengite is a series name for dioctahedral micas of composition K(AlMg)2(OH)2(SiAl)4O10, similar to muscovite but with addition of magnesium. It is a non-IMA recognized mineral name representing the series between muscovite and celadonite.[1][2] The silica content of phengite has been proposed as a geobarometer for the metamorphism of low grade schists.[3] References1. ^Mindat.org 2. ^[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Phengit Mineralienatlas: Phengit] 3. ^ M. E. Fleet and R. A. Howie, Rock-Forming Minerals, Vol. 3A: Micas, Geological Society of London; 2nd ed, 2006, p. 132, {{ISBN|1-86239-142-4}} (accessed through Google books)
1 : Mica group |
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