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Hillesheimite

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Formula:
(K,Ca,Ba,□)
 
2
(Mg,Fe,Ca,□)
 
2
[(Si,Al )
 
13
O
 
23
(OH)
 
6
](OH)·8H
 
2
O
System:Orthorhombic


Structurally related to Günterblassite and Umbrianite.

Classification of Hillesheimite

IMA status:Approved 2011
mindat.org URL:http://www.mindat.org/min-42862.html
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Type Occurrence of Hillesheimite

Type Locality:Graulay (Graulai; Graulei; Grauley), Hillesheim, Eifel, Rhineland-Palatinate, Germany
Place of Conservation of Type Material:Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow,Russia, registration number 4174/1

Crystallography of Hillesheimite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pmmn {P21/m 21/m 2/n}
Cell Parameters:a = 6.979(11) Å, b = 37.1815(18) Å, c = 6.5296(15) Å
Ratio:a:b:c = 0.188 : 1 : 0.176
Unit Cell Volume:V 1,694.36 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
6.857(58)
6.545(100)
6.284(53)
4.787(96)
4.499(59)
3.065(86)
2.958(62)
2.767(62)

Chemical Properties of Hillesheimite

Formula:
(K,Ca,Ba,□)
 
2
(Mg,Fe,Ca,□)
 
2
[(Si,Al )
 
13
O
 
23
(OH)
 
6
](OH)·8H
 
2
O
Essential elements:H, K, Mg, O, Si
All elements listed in formula:Al, Ba, Ca, Fe, H, K, Mg, O, Si

Other Names for Hillesheimite

Synonyms:
IMA2011-080
Other Languages:

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 Hillesheimite

Reference List:

- +
Chukanov, N.V., Zubkova, N.V.,Pekov, I.V., Belakovsky, D.I., Schüller, W., Ternes, B., Blab, G. and Pushcharovsky, D.Y.(2012): Hillesheimite, IMA 2011-080. CNMNC Newsletter No. 12, February 2012, page 152; Mineralogical Magazine, 76, 151-155

Chukanov, N.V., Zubkova, N.V.,Pekov, I.V., Belakovsky, D.I., Schüller, W., Ternes, B., Blab, G. and Pushcharovsky, D.Y.(2012): Hillesheimite, (K,Ca,Ba,□)2(Mg,Fe,Ca,□)2[(Si,Al )13O23(OH)6](OH)·8H2O new phyllosilicate mineral of the gunterblassite group. Zapiski RMO 141 (3), 29-38(2012)

Internet Links for Hillesheimite

Search Engines:
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    • External Links:
  • Look for Hillesheimite on Webmineral
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  • Look for Hillesheimite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Fabre Minerals - search for Hillesheimite specimens
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  • Find Hillesheimite on www.crystalclassics.co.uk
  • Search for - Hillesheimite - on e-Rocks Mineral Sales & Auctions
  • Hillesheimite specimens for sale - minfind.com
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    • Localities for Hillesheimite

    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.
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    (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.
    Germany
     
    • Rhineland-Palatinate
      • Eifel
        • Hillesheim
    		Chukanov, N.V., Zubkova, N.V.,Pekov, I.V., Belakovsky, D.I., Schüller, W., Ternes, B., Blab, G. and Pushcharovsky, D.Y.(2012): Hillesheimite, IMA 2011-080. CNMNC Newsletter No. 12, February 2012, page 152; Mineralogical Magazine, 76, 151-155
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