Mindat Logo

Zemkorite

Formula:
Na
 
2
Ca(CO
 
3
)
 
2
System:HexagonalColour:Colourless
Hardness:2
Name:From Russian "ZEMNOY KORY" an acronym for the Institute of Earth's Crust, Academy of Science, Siberian Branch, Novosibirsk (Russia).


Eitelite Group

Classification of Zemkorite

IMA status:Approved 1985
Strunz 8th edition ID:5/B.05-55
Nickel-Strunz 10th (pending) edition ID:5.AC.10

5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
C : Alkali and alkali-earth carbonates
Dana 8th edition ID:14.3.3.2

14 : ANHYDROUS NORMAL CARBONATES
3 : A2B(XO3)2
Hey's CIM Ref.:11.1.12

11 : Carbonates
1 : Carbonates of the alkali metals and ammonium
mindat.org URL:http://www.mindat.org/min-4393.html
Please feel free to link to this page.

Type Occurrence of Zemkorite

Type Locality:Udachnaya-Vostochnaya pipe, Daldyn, Daldyn-Alakit kimberlite field, Saha Republic (Sakha Republic; Yakutia), Eastern-Siberian Region, Russia
Year of Discovery:1988

Physical Properties of Zemkorite

Lustre:Vitreous, Pearly
Diaphaneity (Transparency):Transparent
Colour:Colourless
Hardness (Mohs):2
Tenacity:Brittle

Crystallography of Zemkorite

Crystal System:Hexagonal
Cell Parameters:a = 10.06Å, c = 12.72Å
Ratio:a:c = 1 : 1.264
Unit Cell Volume:V 1,114.84 ų (Calculated from Unit Cell)

Optical Data of Zemkorite

Type:Uniaxial (-)
RI values: nω = 1.535 nε = 1.513
Maximum Birefringence:δ = 0.022

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low

Chemical Properties of Zemkorite

Formula:
Na
 
2
Ca(CO
 
3
)
 
2
Essential elements:C, Ca, Na, O
All elements listed in formula:C, Ca, Na, O
Common Impurities:K

Relationship of Zemkorite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.AC.05Eitelite
Na
 
2
Mg(CO
 
3
)
 
2
5.AC.10Nyerereite
Na
 
2
Ca(CO
 
3
)
 
2
5.AC.15Bütschliite
K
 
2
Ca(CO
 
3
)
 
2
5.AC.20Fairchildite
K
 
2
Ca(CO
 
3
)
 
2
5.AC.25Shortite
Na
 
2
Ca
 
2
(CO
 
3
)
 
3
5.AC.30Burbankite
(Na,Ca)
 
3
(Sr,Ba,Ce)
 
3
(CO
 
3
)
 
5
5.AC.30Calcioburbankite
Na
 
3
(Ca,REE,Sr)
 
3
(CO
 
3
)
 
5
5.AC.30Khanneshite
(Na,Ca)
 
3
(Ba,Sr,Ce,Ca)
 
3
(CO
 
3
)
 
5
5.AC.30Sanrománite
Na
 
2
CaPb
 
3
[CO
 
3
]
 
5
Related Minerals - Hey's Index Grouping:

- +
11.1.1Zabuyelite
Li
 
2
CO
 
3
11.1.2Natrite
Na
 
2
CO
 
3
11.1.3Nahcolite
NaHCO
 
3
11.1.4Wegscheiderite
Na
 
5
H
 
3
(CO
 
3
)
 
4
11.1.5Thermonatrite
Na
 
2
CO
 
3
·H
 
2
O
11.1.6Trona
Na
 
3
H(CO
 
3
)
 
2
·2H
 
2
O
11.1.7Natron
Na
 
2
CO
 
3
·10H
 
2
O
11.1.8Kalicinite
KHCO
 
3
11.1.9Shortite
Na
 
2
Ca
 
2
(CO
 
3
)
 
3
11.1.10Nyerereite
Na
 
2
Ca(CO
 
3
)
 
2
11.1.11Natrofairchildite
11.1.13Pirssonite
Na
 
2
Ca(CO
 
3
)
 
2
·2H
 
2
O
11.1.14Gaylussite
Na
 
2
Ca(CO
 
3
)
 
2
·5H
 
2
O
11.1.15Baylissite
K
 
2
Mg(CO
 
3
)
 
2
·4H
 
2
O
11.1.16Fairchildite
K
 
2
Ca(CO
 
3
)
 
2
11.1.17Bütschliite
K
 
2
Ca(CO
 
3
)
 
2
11.1.18Teschemacherite
(NH
 
4
)HCO
 
3

Other Names for Zemkorite

Synonyms:
IMA1985-041
Other Languages:
German:Zemkorit
Spanish:Zemkorita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Zemkorite

Reference List:Doklady Akademii Nauk SSSR (1988): 301: 188-193.

American Mineralogist (1990): 75: 933-934.

American Mineralogist (2002): 87: 1384.

Internet Links for Zemkorite

Search Engines:
  • Look for Zemkorite on Google
  • Look for Zemkorite images on Google
  • External Links:
  • Look for Zemkorite on Webmineral
  • Look for Zemkorite on Athena Mineralogy
  • Look for Zemkorite on Wikipedia
  • Look for Zemkorite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Zemkorite in the Natural History Museum (London) online catalogue
  • Zemkorite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Buy from David K Joyce minerals
  • Wendel Minerals - Auktion & Shop
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Wilensky Fine Minerals
  • Buy Minerals and Crystals from Crystalarium.com
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Fabre Minerals - search for Zemkorite specimens
  • rare and unusual minerals mainly crystallized
  • SpiriferMinerals.com - high quality specimens
  • Search for - Zemkorite - on e-Rocks Mineral Sales & Auctions
  • Rare and Unusual minerals at Mineralogical Research Company
  • Find Zemkorite on www.crystalclassics.co.uk
  • Jobs:
  • Mining & Geology Jobs
  • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Zemkorite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    India
     
    • Andhra Pradesh
      • Anantapur District
    AmMin 87:1384-1389 (2002)
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
        • Daldyn-Alakit kimberlite field
          • Daldyn
    M. Kamenetsky et al. , Geophysical Research Abstracts, Vol. 5, 2003.; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 2nd Nov 2009 10:38:49