Cinema hit
| Cinema hit | |
|---|---|
 |
|
| General and classification | |
| other names |
IMA 1973-011 |
| chemical formula |
|
|
Mineral class (and possibly department) |
Silicates and Germanates |
|
System no. to Strunz and to Dana |
9.EC.35 ( 8th edition : VIII / H.12) 71.02.02c.05 |
| Crystallographic Data | |
| Crystal system | monoclinic |
| Crystal class ; symbol | monoclinic prismatic; 2 / m |
| Room group (no.) | C 2 / m (No. 12) |
| Lattice parameters |
a = 5.35 Å ; b = 9.25 Å; c = 10.26 Å β = 100 ° |
| Formula units | Z = 2 |
| Physical Properties | |
| Mohs hardness | 2.5 to 3 |
| Density (g / cm 3 ) | measured: 3.30; calculated: 3.33 |
| Cleavage | completely after {001} |
| Break ; Tenacity | brittle |
| colour | yellowish brown to colorless, light yellow to colorless in thin layers |
| Line color | Please complete |
| transparency | translucent |
| shine | Glass gloss |
| Crystal optics | |
| Refractive indices |
n α = 1.619 n β = 1.628 to 1.633 n γ = 1.635 |
| Birefringence | δ = 0.016 |
| Optical character | biaxial negative |
| Axis angle | 2V = 23 ° (measured); 40 to 82 ° (calculated) |
The mineral kinoshitalite is a rarely occurring layered silicate from the mineral class of " silicates and germanates ". It crystallizes in the monoclinic crystal system with the chemical composition (Ba, K) (Mg, Mn, Al) 3 [(OH, F, O) 2 | Al 2 Si 2 O 10 ]. The elements barium and potassium as well as magnesium , manganese and aluminum in the cation range indicated in the round brackets can represent each other in the formula ( substitution , diadochy), but are always in the same proportion to the other components of the mineral. The same is true for the hydroxide ion , fluorine and oxygen as additional anions.
Kinoshitalith is translucent and only develops small, scale-like crystals up to about a millimeter in size with a glass-like sheen on the surfaces. It is predominantly yellowish-brown in color, but in thin layers it is light yellow to colorless.
Etymology and history
Kinoshitalith was first discovered in the “ Noda -Tamagawa mine” ( 野 田玉川 鉱 山 , Noda-Tamagawa kōzan ; 40 ° 4 ′ 58 ″ N , 141 ° 49 ′ 3 ″ E ), more precisely in the “Misago” ore body there , and described in 1973 by M. Yoshii, K. Maeda, T. Kato, T. Watanabe, S. Yui, A. Kato and K. Nagashima, who named the mineral after Kameki Kinoshita (1896–1974), for his research work on the Japanese Honor ore deposits.
The type material of the mineral is kept in the Department of Geology of the National Museum of Natural Sciences in Shinjuku , Tokyo (Register No. M19511) and in the Mines ParisTech in Paris.
classification
In the meantime outdated, but still in use 8th edition of the mineral classification by Strunz of Kinoshitalith belonged to the department of "phyllosilicates (phyllosilicates)" where he collaborated with Anandit , Bityit , Chernykhit , Clintonite , Ferrokinoshitalith , Margarit and Oxikinoshitalith the the mica group belonging " Margarit range (brittle mica) “with the system no. VIII / H.12 formed.
The 9th edition of Strunz's mineral systematics , which has been in effect since 2001 and is used by the International Mineralogical Association (IMA), also classifies the cinema hit with the “phyllosilicates” section. This is, however, further subdivided according to the crystal structure, so that the mineral, according to its structure, can be found in the sub-section "Layered silicates (phyllosilicates) with mica tablets, composed of tetrahedral or octahedral networks", where it can only be found together with anandite, bityite, clintonite, Ferrokinoshitalith and Oxykinoshitalith the "Clintonite group" with the system no. 9.EC.35 forms.
The systematics of minerals according to Dana , which is mainly used in the English-speaking world , classifies the cinema hit with the section of "layered silicate minerals". Here it is together with anandite, bityite, clintonite, ferrokinoshitalite, ganterite, margarite and oxykinoshitalite in the " mica group (margarite subgroup) " with system no. 71.02.02c within the subsection “ Layered Silicates: Layers of six-membered rings with 2: 1 layers”.
Education and Locations
At its type locality "Noda Tamagawa Mine", Kinoshitalite was found in the Hausmannite - Tephroit ore, where it appeared in association with Celsian , Chalcopyrite , Huebnerite , Pyrrhotite , Quartz , Rhodochrosite , Rhodonite , Sonolite and Spessartine . In addition to its type locality, it could still be found in Japan at Hokkejino ( 法 花 寺 野 ), Kizugawa in the Kyōto prefecture .
The only known site in Germany so far is the "Caspar" quarry on Ettringer Bellerberg near Ettringen in the Eifel (Rhineland-Palatinate).
Other sites known so far (as of 2013) are the "Brunswick No. 12 Mine "in Gloucester County (New Brunswick) in Canada, the hydrothermal uranium deposit Rožná in the Czech region of Kraj Vysočina, the rhodonite deposit in the Muzeinyi Valley in Kyrgyzstan , Otjosondu in the Otjozondjupa region in Namibia, the" Jakobsberg "and" Kittel ”and Långban in Sweden as well as the“ Incline Sanbornite ”deposit at Trumbull Peak in Mariposa County (California) and the“ Hutter Mine ”in Pittsylvania County (Virginia) in the USA.
Crystal structure
Kinoshitalite crystallizes monoclinically in the space group C 2 / m (space group no. 12) with the lattice parameters a = 5.35 Å ; b = 9.25 Å; c = 10.26 Å and β = 100 ° and 2 formula units per unit cell .
See also
literature
- M. Yoshii, K. Maeda, T. Kato, T. Watanabe, S. Yui, A. Kato, K. Nagashima: Kinoshitalite, a new mineral from the Noda-Tamagawa mine, Iwate Prefecture , In: Chigaku Kenkyu , Volume 24 (1973), pp. 181–190 ( PDF 1.2 MB; Japanese )
- M. Fleischer, GY Chao, A. Kato: New mineral names , In: American Mineralogist , Volume 60 (1975), pp. 485–489 ( PDF 623 kB ; p. 2)
- Friedrich Klockmann : Klockmann's textbook of mineralogy . Ed .: Paul Ramdohr , Hugo Strunz . 16th edition. Enke , Stuttgart 1978, ISBN 3-432-82986-8 , pp. 751 (first edition: 1891).
Web links
- Mineral Atlas: Kinoshitalith (Wiki)
- Database-of-Raman-spectroscopy - Kinoshitalite
- American-Mineralogist-Crystal-Structure-Database - Kinoshitalite
Individual evidence
- ↑ a b IMA / CNMNC List of Mineral Names, February 2013 (PDF 1.3 MB)
- ↑ a b c d e Hugo Strunz , Ernest H. Nickel: Strunz Mineralogical Tables . 9th edition. E. Schweizerbart'sche Verlagbuchhandlung (Nägele and Obermiller), Stuttgart 2001, ISBN 3-510-65188-X , p. 670 .
- ↑ Webmineral - Kinoshitalite
- ↑ a b Kinoshitalite , In: John W. Anthony, Richard A. Bideaux, Kenneth W. Bladh, Monte C. Nichols (Eds.): Handbook of Mineralogy, Mineralogical Society of America , 2001 ( PDF 75.8 kB )
- ↑ a b c Mindat - Kinoshitalite
- ↑ 貴 治 康夫 : 法 花 寺 野 の マ ン ガ ン 鉱 物 . In: 京都 府 レ ッ ド デ ー タ ブ ッ ク / Red Data Book of Kyoto Prefecture . Kyōto Prefecture, accessed June 16, 2013 (Japanese).
- ↑ Find location list for Kinoshitalith at the Mineralienatlas and at Mindat