| 词条 | Väyrynenite |
| 释义 |
| name = Väyrynenite | image = Vayrynenite-177599.jpg | alt = | caption = Väyrynenite (size: 1.7 x 1.4 x 0.6 cm) | category = Phosphate mineral | formula = MnBe(PO4)(OH,F) | molweight = | strunz = 8.BA.05 | dana = | system = Monoclinic | class = Prismatic (2/m) (same H-M symbol) | symmetry = P21/a | unit cell = a = 5.411(5) Å, b = 14.49(2) Å, c = 4.73 Å; β = 102.75°; Z = 4 | color = Light pink to rose-red, salmon pink, pale gray, brown | colour = | habit = Rare as elongated and striated prismatic crystals; fine-grained aggregates | twinning = | cleavage = Perfect on {010}, good on {100}, fair on {001} | fracture = Uneven | tenacity = Brittle | mohs = 5 | luster = Vitreous | streak = White | diaphaneity = Transparent to translucent | gravity = 3.22 | density = | polish = | opticalprop = Biaxial (–) | refractive = nα = 1.638 - 1.640 nβ = 1.658 - 1.662 nγ = 1.664 - 1.667 | birefringence = δ = 0.026 - 0.027 | pleochroism = Visible X= orangish, Y= red, Z= dark red | 2V = 46°–55° | dispersion = r > v moderate | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = [1][2][3] }}Väyrynenite is a rare phosphate mineral with formula MnBe(PO4)(OH,F).[1] It was first described in 1954 for an occurrence in Viitaniemi, Erajarvi, Finland and named for mineralogist Heikki Allan Väyrynen of Helsinki, Finland.[3] It occurs in pegmatites as an alteration of beryl and triphylite. It occurs in association with eosphorite, moraesite, hurlbutite, beryllonite, amblygonite, apatite, tourmaline, topaz, muscovite, microcline and quartz.[3] References1. ^1 Väyrynenite on Mindat.org {{DEFAULTSORT:Väyrynenite}}2. ^Väyrynenite data on Webmineral 3. ^1 2 Väyrynenite data from the Handbook of Mineralogy 2 : Phosphate minerals|Monoclinic minerals |
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