SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Chelkarite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
CaMgB2O4(Cl,OH)2 · 5H2O Or near, with Cl:OH = 3:1
Colour:
Colorless
Crystal System:
Orthorhombic
Name:
Named for the Chelkar slat dome, Kazakhstan, where it was discovered.
This page provides mineralogical data about Chelkarite.


Hide all sections | Show all sections

Classification of ChelkariteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:
1968
6.H0.05

6 : BORATES
H : Unclassified borates
0 :
26.7.2.1

26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
10.1.15

10 : Borates with other anions
1 : Borates with halide

Physical Properties of ChelkariteHide

Transparency:
Transparent
Colour:
Colorless
Streak:
White
Cleavage:
Perfect
Parallel to elongation, so mineral breaks into needles

Optical Data of ChelkariteHide

Type:
Biaxial (+)
RI values:
nα = 1.520 nγ = 1.558
Max Birefringence:
δ = 0.038
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
weak to moderate

Chemical Properties of ChelkariteHide

Formula:
CaMgB2O4(Cl,OH)2 · 5H2O Or near, with Cl:OH = 3:1
IMA Formula:
CaMgB2O4Cl2 · 7H2O (?)

Crystallography of ChelkariteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 13.69 Å, b = 20.84 Å, c = 8.26 Å
Ratio:
a:b:c = 0.657 : 1 : 0.396
Unit Cell V:
2,356.57 ų (Calculated from Unit Cell)

Type Occurrence of ChelkariteHide

General Appearance of Type Material:
Flattened long prismatic crystals to 15 mm
Geological Setting of Type Material:
Carnallite-bischofite rock at a salt dome
Reference:
Avrova, N.P., Bocharov, V.M., Khalturina, I.I., Yunosova, Z.R. (1968) Mineralogy of borates in halogen formations. Geology and Exploration of Solid Mineral Deposits of Kazakhstan: 1969: 169-173.

Other Language Names for ChelkariteHide

German:Chelkarit
Spanish:Chelkarita

Related Minerals - Nickel-Strunz GroupingHide

6.H0.10Braitschite-(Ce)(Ca,Na2)7(Ce,La)2B22O43 · 7H2OHex.
6.H0.15SatimoliteKNa2(Al5Mg2)[B12O18(OH)12](OH)6Cl4·4H2OTrig. 3m (3 2/m) : R3m
6.H0.20IquiqueiteK3Na4Mg(CrO4)B24O39(OH) · 12H2OHex.
6.H0.25WardsmithiteCa5Mg[B4O7]6 · 30H2OHex.
6.H0.35HalurgiteMg4[B8O13(OH)2]2·7H2OMon. 2/m : P2/b
6.H0.40EkateriniteCa2(B4O7)(Cl,OH)2 · 2H2OHex.
6.H0.45VitimiteCa6[B14O19](SO4)(OH)14 · 5H2OMon.
6.H0.50CanavesiteMg2(HBO3)(CO3) · 5H2OMon.
6.H0.55QilianshaniteNaHCO3 · H3BO3 · 2H2OMon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

10.1.1TeepleiteNa2[B(OH)4]ClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
10.1.2BandyliteCu[B(OH)4]ClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
10.1.3BerboriteBe2(BO3)(OH,F) · H2OTrig.
10.1.4FluoboriteMg3(BO3)(F,OH)3Hex.
10.1.5BoraciteMg3(B7O13)ClOrth. mm2 : Pca21
10.1.6KarliteMg7(BO3)3(OH,Cl)5Orth.
10.1.7ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2OMon.
10.1.8/9/10HilgarditeCa2B5O9Cl · H2OTric. 1 : P1
10.1.11SolongoiteCa2(H3B3O7)(OH)ClMon.
10.1.12HydrochlorboriteCa4B8O15Cl2 · 21H2OMon.
10.1.13EkateriniteCa2(B4O7)(Cl,OH)2 · 2H2OHex.
10.1.14VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2OTric. 1 : P1
10.1.16JohachidoliteCaAlB3O7Orth. mmm (2/m 2/m 2/m) : Cmma
10.1.17SatimoliteKNa2(Al5Mg2)[B12O18(OH)12](OH)6Cl4·4H2OTrig. 3m (3 2/m) : R3m
10.1.18ChambersiteMn2+3(B7O13)ClOrth. mm2 : Pca21
10.1.19Congolite(Fe2+,Mg)3(B7O13)ClTrig. 3m : R3c
10.1.20EricaiteFe2+3(B7O13)ClOrth.

Other InformationHide

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 ChelkariteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Avrova, N.P., Bocharov, V.M., Khalturina, I.I., Yunosova, Z.R. (1968) Mineralogy of borates in halogen formations. Geology and Exploration of Solid Mineral Deposits of Kazakhstan: 1969: 169-173.
Fleischer, M. (1971) New mineral names. American Mineralogist: 56: 1121-1123.
Shipovalov, Y.V. and N.P. Avrova (1971) X-ray study of the new borates aldzhanite and chelkarite. Issledovaniya v Oblasti Khimicheskikh i Fizicheskikh Metodov Analiza Mineralnogo Syr’ya: 176–179. (in Russian)
Hey, M.H., Embrey, P.G. (1974) Twenty-eighth list of new mineral names. Mineralogical Magazine: 39: 903-932.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Pekov, I.V. (1998) Chelkarite. in Minerals first discovered on the territory of the former Soviet Union, Ocean Pictures, (Moscow): 59-59.

Internet Links for ChelkariteHide

Localities for ChelkariteHide

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.
Kazakhstan (TL)
 
  • Aktobe Region
    • Shalkar
      • Aksai Valley
AM 56 (1971), 1122
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: November 13, 2019 02:55:25 Page generated: November 2, 2019 19:27:51
Go to top of page