登录注册
主页关于 MindatMindat手册Mindat的历史版权Who We Are联系我们于 Mindat.org刊登广告
捐赠给 MindatCorporate Sponsorship赞助板页已赞助的板页在 Mindat刊登 广告的广告商于 Mindat.org刊登广告
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe Elements书籍及杂志
搜索矿物的性质搜索矿物的化学Advanced Locality Search随意显示任何一 种矿物Random Locality使用minID搜索邻近产地Search Articles搜索词汇表更多搜索选项
搜索:
矿物名称:
地区产地名称:
关键字:
 
Mindat手册添加新照片Rate Photos产区编辑报告Coordinate Completion Report添加词汇表项目
Mining Companies统计会员列表Mineral Museums矿物展及活动The Mindat目录表设备设置
照片搜索Photo Galleries今天最新的照片昨天最新的照片用户照片相集过去每日精选照片相集Mineral Photography

Karchevskyite

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About KarchevskyiteHide

Formula:
Mg18Al9(OH)54Sr2(CO3)9(H2O)6 (H3O)5
Colour:
Colourless to white
Lustre:
Vitreous, Pearly
Hardness:
2
Specific Gravity:
2.21
Crystal System:
Trigonal
Name:
Named in honor of Pavel Ivanovich Karchevsky (Павел Иванович Карчевский) (1976-2002), Russian mineralogist, for his contributions to study of carbonatite massifs.

Belongs to hydrotalcite-like layered double hydroxides.


Classification of KarchevskyiteHide

Approved
Approval Year:
2005
First Published:
2008

Physical Properties of KarchevskyiteHide

Vitreous, Pearly
Colour:
Colourless to white
Hardness:
Tenacity:
Flexible
Cleavage:
Perfect
on {001}
Density:
2.21 g/cm3 (Measured)    2.18 g/cm3 (Calculated)

Optical Data of KarchevskyiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.542 nε = 1.534
Max Birefringence:
δ = 0.008
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Pleochroism:
Non-pleochroic

Chemical Properties of KarchevskyiteHide

Formula:
Mg18Al9(OH)54Sr2(CO3)9(H2O)6 (H3O)5
IMA Formula:
Mg18Al9(OH)54Sr2(CO3)9(H2O)6(H3O)5

Crystallography of KarchevskyiteHide

Crystal System:
Trigonal
Cell Parameters:
a = 16.055 Å, c = 25.66 Å
Ratio:
a:c = 1 : 1.598
Unit Cell V:
5728 ų
Z:
3

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.52 Å(100)
6.41 Å(40)
5.13 Å(30)
4.27 Å(60)
3.665 Å(90)
3.547 Å(90)
3.081 Å(60)
Comments:
Format: d/A, I, (hkl)

Type Occurrence of KarchevskyiteHide

General Appearance of Type Material:
spherulites up to 1 mm in diameter, composed of thin bended ductile plates
Place of Conservation of Type Material:
Mineralogical Museum, Department of Mineralogy, St. Petersburg State University, Russia.
Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow.
Geological Setting of Type Material:
late-stage hydrothermal environment
Associated Minerals at Type Locality:
Reference:
Britvin, S.N., Chukanov, N.V., Bekenova, G.K., Tagovkina, M.A., Antonov, A.V., Bogdanova, A.N., and Krasnova, N.I. (2008) Karchevskyite, [Mg^18Al^9(OH)^54][Sr^2(CO^3,PO^4)^9(H^2O,H^3O)^11] a new mineral species of the layered double hydroxide family. Geology of Ore Deposits: 50: 556-564.

Synonyms of KarchevskyiteHide

Relationship of Karchevskyite to other SpeciesHide

Other Members of this group:
MotukoreaiteMg6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2OTrig. 3m (3 2/m) : R3m
NatroglaucoceriniteZn6Al3(OH)18[Na(H2O)6](SO4)2•6H2OHex.
NikischeriteFe2+6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2OTrig.
ShigaiteMn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2OTrig.
WermlanditeMg7Al2(OH)18[Ca(H2O)6][SO4]2 · 6H2OTrig. 3m (3 2/m) : P3c1

Fluorescence of KarchevskyiteHide

Other InformationHide

IR Spectrum:
wave numbers in 1/cm (s: shoulder):

3470, 3420 s, 3035, 2960s, 1650, 1426, 1366 (quintinite impurity), 1024, 937, 860, 779, 678, 615s, 553, 449, 386
Thermal Behaviour:
Thermogravimetric Analysis (TGA):

- 12.2 wt.-% (230°C)
- 6.1 wt.-% (320°C)
- 23.7 wt.-% (440°C)

corresponding to a total weight loss of 42.0 wt.-%
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for KarchevskyiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Britvin, S.N., Chukanov, N.V., Bekenova, G.K., Tagovkina, M.A., Antonov, A.V., Bogdanova, A.N., and Krasnova, N.I. (2008) Karchevskyite, [Mg18Al9(OH)54][Sr2(CO3,PO4)9(H2O,H3O)11] a new mineral species of the layered double hydroxide family. Geology of Ore Deposits: 50: 556-564.
Mills, S.J., Christy, A.G., Genin, J.-M.R., Kameda, T., Colombo, F. (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine: 76: 1289-1336.

Internet Links for KarchevskyiteHide

Localities for KarchevskyiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Murmansk Oblast
    • Kovdor Massif
Britvin, S. N., Chukanov, N. V., Bekenova, G. K., Yagovkina, M. A., Antonov, A. V., Bogdanova, A. N., & Krasnova, N. I. (2008). Karchevskyite,[Mg18Al9 (OH) 54][Sr2 (CO3, PO4) 9 (H2O, H3O) 11], a new mineral species of the layered double hydroxide family. Geology of Ore Deposits, 50(7), 556-564.
 
矿物 and/or 产地  
版权所有© mindat.org1993年至2020年,除了规定的地方。 Mindat.org全赖于全球数千个以上成员和支持者们的参与。
隐私政策 - 条款和条款细则 - 联络我们 Current server date and time: 2020.4.7 06:33:42 Page generated: 2020.2.19 12:06:52
Go to top of page