| 词条 | Kleinite | |
| 释义 |
| name = Kleinite | boxwidth = | boxbgcolor = | image = Kleinite-21676.jpg | imagesize = 260px | alt = | caption = Kleinite atop quartz from the McDermitt Mine | category = | formula = (Hg2N)(Cl,SO4) · nH2O | strunz = 3.DD.35 | dana = | system = Hexagonal | class = Dihexagonal dipyramidal 6/mmm (6/m 2/m 2/m) | symmetry = | unit cell = a = 6.762(2) Å, c = 11.068(3) Å, Z=4 | color = Light to canary-yellow, orange | habit = Short prismatic to equant crystals exhibiting prominent {10{{overline|1}}0}, {20{{overline|2}}1}, and {0001} | twinning = | cleavage = Uneven on {0001}, imperfect on {10{{overline|1}}0} | fracture = | tenacity = Brittle | mohs = 3.5 | luster = Adamantine to greasy | streak = Sulfur yellow | diaphaneity = Transparent to translucent | gravity = 7.9-8.0 | density = | polish = | opticalprop = Uniaxial (+) (Biaxial below 130 °C (biaxial negative) and uniaxial above 130 °C (uniaxial positive). Isotropic above ~ 190 °C) | refractive = nω = 2.190 nε = 2.210 | birefringence = δ = 0.020 | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = Color deepens on exposure to daylight, original color returns in darkness | prop1 = | prop1text = | references = [1][2] }}Kleinite is a rare mineral that has only been found in the United States and Germany that occurs in hydrothermal mercury deposits.[2] It occurs associated with calcite, gypsum and (rarely) barite or calomel. Its color can range from pale yellow/canary yellow to orange, and it is transparent to translucent.[2] As a photosensitive mineral, its coloration darkens when exposed to light.[6] It has been hypothesized that kleinite formed through a "reaction of cinnabar with oxidized meteoric water", with this reaction being the source of kleinite's nitrogen.[6] EtymologyKleinite is named after Carl Klein (1842–1907), who was a professor of mineralogy at the University of Berlin.[2] See also
References1. ^[https://www.mindat.org/min-2225.html Kleinite data on Mindat] [2][3]2. ^1 2 3 4 {{cite web | title=Kleinite | publisher=Handbook of Mineralogy | date=2005 | url=http://www.handbookofmineralogy.org/pdfs/kleinite.pdf | access-date=August 3, 2017}} 3. ^1 2 {{cite book | last=Castor | first=S.B. | last2=Ferdock | first2=G.C. | title=Minerals of Nevada | publisher=University of Nevada Press | series=Minerals of Nevada | issue=no. 31 | year=2004 | isbn=978-0-87417-540-0 | url=https://books.google.com/books?id=flAhr0MbxM8C&pg=PA304 | access-date=August 3, 2017 | page=304}} }} External links
1 : Mercury minerals |
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