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Hydrocalumite

Big Photo

Caspar quarry, Ettringer Bellerberg Mt. (Bellberg Mt.; Bellenberg Mt.; Billenberg Mt.; Boilenberg Mt.), Bellerberg volcano, Ettringen, Mayen, Eifel Mts, Rhineland-Palatinate, Germany
© Stephan Wolfsried

Show Hydrocalumite Photos (15)
Formula:
Ca
 
2
Al(OH)
 
7
·2H
 
2
O
System:MonoclinicColour:Clourless to light green
Hardness:3
Name:In allusion to the composition, containing water (HYDRO-), CALcium, and ALUMinium.
This page provides mineralogical data about Hydrocalumite.

Classification of Hydrocalumite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:4/F.10-10
Nickel-Strunz 10th (pending) edition ID:4.FL.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
L : Hydroxides with H2O +- (OH); sheets of edge-sharing octahedra
Dana 8th edition ID:6.4.4.1

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
4 : Miscellaneous
Hey's CIM Ref.:7.4.14

7 : Oxides and Hydroxides
4 : Oxides of Be, Mg and the alkaline earths
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Type Occurrence of Hydrocalumite

Type Locality:Scawt Hill, Larne, Co. Antrim, Northern Ireland, UK
Year of Discovery:1934

Physical Properties of Hydrocalumite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Clourless to light green
Hardness (Mohs):3
Cleavage:Perfect
{001}; a poor cleavage nclined at about 60° to {100}.
Density (measured):2.15 g/cm3
Density (calculated):2.15 g/cm3

Crystallography of Hydrocalumite

Crystal System:Monoclinic
Class (H-M):2 - Sphenoidal
Space Group:P21 {P1 1 21} {P21} {P1 21 1}
Cell Parameters:a = 9.6Å, b = 11.4Å, c = 16.84Å
β = 111°
Ratio:a:b:c = 0.842 : 1 : 1.477
Unit Cell Volume:V 1,720.56 ų (Calculated from Unit Cell)
Morphology:Massive.

Optical Data of Hydrocalumite

Type:Biaxial (-)
RI values: nα = 1.535 nβ = 1.553 nγ = 1.557
2V:Measured: 24° , Calculated: 50°
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
Dispersion:r > v weak

Chemical Properties of Hydrocalumite

Formula:
Ca
 
2
Al(OH)
 
7
·2H
 
2
O
Essential elements:Al, Ca, H, O
All elements listed in formula:Al, Ca, H, O

Relationship of Hydrocalumite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.FL.05Woodallite
Mg
 
6
Cr
 
2
(OH)
 
16
Cl
 
2
·4H
 
2
O
4.FL.05Iowaite
Mg
 
4
Fe(OH)
 
8
OCl·4H
 
2
O
4.FL.05Jamborite
(Ni
2+
 
,Ni
3+
 
,Co,Fe)(OH)
 
2
(OH,S,H
 
2
O)
4.FL.05Meixnerite
Mg
 
6
Al
 
2
(OH)
 
18
·4H
 
2
O
4.FL.05Muskoxite
Mg
 
7
Fe
 
4
O
 
13
·10H
 
2
O
4.FL.05Fougèrite
(Fe
2+
 
,Mg)
 
6
Fe
3+
2
(OH)
 
18
 · 4H
 
2
O
4.FL.15Kuzelite
Ca
 
4
Al
 
2.4
(OH)
 
12.8
(SO
 
4
)·6H
 
2
O
4.FL.20Aurorite
(Mn
2+
 
,Ag,Ca)Mn
4+
3
O
 
7
 · 3H
 
2
O
4.FL.20Chalcophanite
(Zn,Fe,Mn)Mn
 
3
O
 
7
·3H
 
2
O
4.FL.20Ernienickelite
NiMn
 
3
O
 
7
·3H
 
2
O
4.FL.20Jianshuiite
(Mg,Mn)Mn
 
3
O
 
7
·3H
 
2
O
4.FL.25Woodruffite
Zn(Mn
4+
 
,Mn
3+
 
)
 
5
O
 
10
·3½H
 
2
O
4.FL.30Asbolane
(Ni,Co)
 
2-x
Mn
4+
 
(O,OH)
 
4
 · nH
 
2
O
4.FL.35Buserite
Na
 
4
Mn
 
14
O
 
27
 ·21H
 
2
O
4.FL.40Ranciéite
(Ca,Mn)Mn
 
4
O
 
9
·3H
 
2
O
4.FL.40Takanelite
(Mn,Ca)Mn
 
4
O
 
9
·H
 
2
O
4.FL.45Birnessite
(Na,Ca)
 
0.5
(Mn
4+
 
,Mn
3+
 
)
 
2
O
 
4
 · 1.5H
 
2
O
4.FL.55Cianciulliite
Mn(Mg,Mn)
 
2
Zn
 
2
(OH)
 
10
·2-4H
 
2
O
4.FL.60Jensenite
Cu
 
3
[TeO
 
6
] · 2H
 
2
O
4.FL.65Leisingite
Cu(Mg,Cu,Fe,Zn)
 
2
[TeO
 
6
] · 6H
 
2
O
4.FL.70Akdalaite
4Al
 
2
O
 
3
 · H
 
2
O
4.FL.75Cafetite
(Ca,Mg)(Fe,Al)
 
2
Ti
 
4
O
 
12
·4H
 
2
O
4.FL.80Mourite
UMo
 
5
O
 
12
(OH)
 
10
4.FL.85Deloryite
Cu
 
4
(UO
 
2
)(MoO
 
4
)
 
2
(OH)
 
6
Related Minerals - Hey's Index Grouping:

- +
7.4.1Bromellite
BeO
7.4.2Behoite
Be(OH)
 
2
7.4.3Clinobehoite
Be(OH)
 
2
7.4.4Chrysoberyl
BeAl
 
2
O
 
4
7.4.5Magnesiotaaffeite-2N’2S
Mg
 
3
Al
 
8
BeO
 
16
7.4.6Magnesiotaaffeite-6N’3S
(Mg,Fe,Zn)
 
2
Al
 
6
BeO
 
12
7.4.7Periclase
MgO
7.4.8Brucite
Mg(OH)
 
2
7.4.9Spinel
MgAl
 
2
O
 
4
7.4.10Meixnerite
Mg
 
6
Al
 
2
(OH)
 
18
·4H
 
2
O
7.4.11Lime
CaO
7.4.12Portlandite
Ca(OH)
 
2
7.4.13Mayenite
Ca
 
12
Al
 
14
O
 
33
7.4.15Marokite
CaMn
 
2
O
 
4
7.4.16Ranciéite
(Ca,Mn)Mn
 
4
O
 
9
·3H
 
2
O
7.4.17Hollandite
Ba(Mn
4+
 
,Mn
2+
 
)
 
8
O
 
16
7.4.18Romanèchite
(Ba,H
 
2
O)
 
2
Mn
 
5
O
 
10
7.4.19Todorokite
(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)
 
6
O
 
12
·3H
 
2
O

Other Names for Hydrocalumite

Other Languages:
German:Hydrocalumit
Russian:Гидрокалюмит
Spanish:Hydrocalumita

Other Information

Thermal Behaviour:Strongly pyroelectric.
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 Hydrocalumite

Reference List:Tilley (1934), Mineralogical Magazine: 23: 607.

American Mineralogist (1935): 20: 316.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 667-668.

Neues Jahrbuch für Mineralogie, Monatshefte (1988): 462-475.

Internet Links for Hydrocalumite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Hydrocalumite in the Natural History Museum (London) online catalogue
  • Hydrocalumite details from Handbook of Mineralogy (PDF)
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    Localities for Hydrocalumite

    Hide Locality List
    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.
    Austria
     
    • Styria
      • Bad Radkersburg
        • Klöch
    		Postl, W. & Bojar, H.-P. (2003)
    France
     
    • Auvergne
      • Puy-de-Dôme
        • Clermont-Ferrand
          • Ceyrat
    		H. Grünhagen and J. Mergoil, Bull. Soc. Franç. Minér. Crist. , 1963, LXXXVI, pp. 149-157.; Grunhagen, H. et al. (1963): Découverte d\'hydrocalumite et afwillite associées à l\'ettringite dans les porcélanites de Boisséjour près Ceyrat (Puy de Dôme). Bulletin de la Société Française de Minéralogie et de Cristallographie 86, 149-157.
    Germany
     
    • Bavaria
      • Franconia
        • Maroldsweisach
    		Wittern: "Mineralfundorte in Deutschland", 2001
    • Hesse
      • North Hesse
        • Richelsdorf District
          • Süss
            • Richelsdorf Smelter
    		S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Lower Saxony
      • Harz Mts
        • Lautenthal
    		No reference listed
    • Rhineland-Palatinate
      • Eifel Mts
        • Daun
          • Hinterweiler
    		Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
          • Üdersdorf
    		Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
        • Mayen
          • Ettringen
            • Bellerberg volcano
              • Ettringer Bellerberg Mt. (Bellberg Mt.; Bellenberg Mt.; Billenberg Mt.; Boilenberg Mt.)
    		[Jasmund, K., Hentschel, G., Seltene Mineralparagenesen in den Kalksteineinschlüssen der Lava des Ettringer Bellerberges bei Mayen (Eifel), Beitr. Minera. Petr. 10, 296-314, 1964] [Lapis, 15 (5), 9-36]
              • Southern lava flow
    		Hentschel, G. (1961): Seltene Mineralneubildungen in einem Kalksteineinschluß der Lava des Ettringer Bellerberges, Fortschritte Mineralogie, Vol. 39, 345
    in the collection of C.&H: Schäfer
        • Mendig
          • Bell
    		Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
    Israel
     
    • Negev desert
    		Gross, S. (1977): The Mineralogy of the Hatrurim Formation, Israel. Geological Survey of Israel, Bulletin no. 70, 80 pp.
    Italy
     
    • Latium
      • Viterbo Province
        • Montalto di Castro
          • Pietra Massa Locality
    		Passaglia, E. & Turconi, B. (1982): Silicati ed altri minerali di Montalto di Castro - VT. Rivista Mineralogica Italiana, 4/1982, 97-110.
    • Liguria
      • Genova Province
        • Genova
          • Varenna Valley
    		Rivista Mineralogica Italiana, 22 (3), 39-41.
    Japan
     
    • Kyushu Island
      • Oita prefecture
        • Saeki city
    		Alfredo Petrov specimen
    Russia
     
    • Northern Caucasus Region
      • Kabardino-Balkarian Republic
    		American Mineralogist, Volume 94, pages 1361–1370, 2009
    A. E. Zadov data
    UK
     
    • Northern Ireland
      • Co. Antrim
        • Larne
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 590.
    USA
     
    • California
      • Riverside Co.
        • Crestmore
    		[micromounts@yahoogroups.com]
    Mineral and/or Locality
    Google
     
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    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: 30th Oct 2009 00:00:21