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Heulandite-Ba

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Formula:
(Ba,Ca,K)5(Si27Al9)O72 · 22H2O
Colour:
Colourless to white, Pale yellowish-white, Pale beige
Lustre:
Vitreous, Pearly
Hardness:
Specific Gravity:
2.35
Crystal System:
Monoclinic
Name:
Named in 1822 by Henry James Brooke in honor of Johann Heinrich "John Henry" Heuland [March 21, 1778, Beyreuth, Germany - November 16, 1856, Hastings, Sussex, England, UK], a mineral collector and mineral dealer living in England and for the suffix indicating dominant Ba. Despite having an international reputation, there are no known images of Henry Heuland.
The barium analogue of Heulandite-Ca, Heulandite-K, Heulandite-Na, and Heulandite-Sr.


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Classification of Heulandite-BaHide

Approved
Approval Year:
2003
9.GE.05

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
E : Chains of T10O20 Tetrahedra

Pronounciation of Heulandite-BaHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of Heulandite-BaHide

Vitreous, Pearly
Transparency:
Transparent, Translucent
Colour:
Colourless to white, Pale yellowish-white, Pale beige
Streak:
White
Hardness:
3½ on Mohs scale
Cleavage:
Perfect
Perfect on the {010}
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
2.35 g/cm3 (Measured)    2.35 g/cm3 (Calculated)

Optical Data of Heulandite-BaHide

Type:
Biaxial (+)
RI values:
nα = 1.506 nβ = 1.506 nγ = 1.515
2V:
Measured: 38° , Calculated: 34°
Max Birefringence:
δ = 0.009
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of Heulandite-BaHide

Formula:
(Ba,Ca,K)5(Si27Al9)O72 · 22H2O

Crystallography of Heulandite-BaHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 17.738 Å, b = 17.856 Å, c = 7.419 Å
β = 116.55°
Ratio:
a:b:c = 0.993 : 1 : 0.415
Unit Cell V:
2,102.02 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.94 (66)
5.12 (59)
4.65 (66)
3.978 (97)
3.181 (56)
2.973 (100)
2.807 (65)

Type Occurrence of Heulandite-BaHide

Synonyms of Heulandite-BaHide

Other Language Names for Heulandite-BaHide

Relationship of Heulandite-Ba to other SpeciesHide

Other Members of this group:
Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2OMon. 2/m : B2/m
Heulandite-K(K,Ca,Na)5(Si27Al9)O72 · 26H2OMon. 2/m : B2/m
Heulandite-Na(Na,Ca,K)6(Si,Al)36O72 · 22H2OMon. 2/m : B2/m
Heulandite-Sr(Sr,Na,Ca)5(Si27Al9)O72 · 24H2OMon. 2/m : B2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Calcite1 photo of Heulandite-Ba associated with Calcite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.GE.05Clinoptilolite-CaCa3(Si30Al6)O72·20H2OMon.
9.GE.05Clinoptilolite-KK6(Si30Al6)O72·20H2OMon. 2/m
9.GE.05Clinoptilolite-NaNa6(Si30Al6)O72·20H2OMon. 2/m : B2/m
9.GE.05Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2OMon. 2/m : B2/m
9.GE.05Heulandite-K(K,Ca,Na)5(Si27Al9)O72 · 26H2OMon. 2/m : B2/m
9.GE.05Heulandite-Na(Na,Ca,K)6(Si,Al)36O72 · 22H2OMon. 2/m : B2/m
9.GE.05Heulandite-Sr(Sr,Na,Ca)5(Si27Al9)O72 · 24H2OMon. 2/m : B2/m
9.GE.10Stilbite-CaNaCa4[Al9Si27O72] · nH2OMon. 2/m : B2/m
9.GE.10Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2OMon. 2/m : B2/m
9.GE.15Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2OOrth. mmm (2/m 2/m 2/m)
9.GE.15StelleriteCa4(Si28Al8)O72 · 28H2OOrth. mmm (2/m 2/m 2/m) : Fmmm
9.GE.20Brewsterite-Ba(Ba,Sr)[Al2Si6O16] · 5H2OMon. 2/m : P21/m
9.GE.20Brewsterite-Sr(Sr,Ba,Ca)[Al2Si6O16] · 5H2O

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 Heulandite-BaHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Merkle, A.B., Slaughter, M. (1968) Determination and refinement of the structure of heulandite. American Mineralogist: 53: 1120-1138.
Alberti, A. (1972) On the crystal structure of the zeolite heulandite. Tschermaks Mineralogische und Petrographische Mitteilungen: 18: 129-146.
Comodi, P., Gatta, G.D., Zanazzi, P.F. (2001) High-pressure structural behavior of heulandite. European Journal of Mineralogy: 15: 247-255.
Larsen, A.O, Nordrum, F.S., Döbelin, N., Armbruster, T., Petersen, O.V., Erambert, M. (2005) Heulandite-Ba, a new zeolite species from Norway. European Journal of Mineralogy: 17: 143-154.
Green, D.I., Tindle, A.G., Hubbard, N., McCallum, D., Jackson, B. (2008) Heulandite-Sr and heulandite-Ba, two zeolite group minerals new to Britain from Whitesmith Mine, Strontian, Highland Region, Scotland. Journal of the Russell Society: 11: 80-86.

Internet Links for Heulandite-BaHide

Localities for Heulandite-BaHide

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.
Canada
 
  • Alberta
Tschernich, R. (1992): Zeolites of the World, p.254
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Pardubice Region
Prachař, I.: Současný stav výskytu nerostů ve Chvaleticích. Acta musei Reginaehradecensis, série A: vědy přírodní, 1981, roč. XVI., s. 99-102.
Japan
 
  • Shikoku Island
    • Kochi Prefecture
Minakawa et al (2002) Strontian and Barian heulandite in sandy stone from the Shimanto formation and Izumi formation, Shikoku. (2002 annual meeting of JAMPEG, 282)
Norway (TL)
 
  • Buskerud
    • Flesberg
      • Svene
        • Kongsberg Silver Mining District
          • Vinoren Silver Mine Field
            • Vinoren Southern Mines
Larsen, A.O., Nordrum,F.S., Döbelin, N., Armbruster, T., Petersen, O.V. & Erambert, M.(2005): Heulandite-Ba, a new zeolite species from Norway. European Journal of Mineralogy, 17, 143-153
    • Kongsberg
      • Kongsberg Silver Mining District
        • Overberget Mining Field
Larsen, A.O., Nordrum,F.S., Döbelin, N., Armbruster, T., Petersen, O.V. & Erambert, M.(2005): Heulandite-Ba, a new zeolite species from Norway. European Journal of Mineralogy, 17, 143-153; Nordrum, F. S., Larsen, A.O. & Erambert, M. (2005): Minerals of the heulandite series in Norway- additional data and summary. Norsk Bergverksmuseum Skrift, 30: 98-112
  • Oppland
    • Sel
      • Sjoa
Larsen, A.O., Nordrum,F.S., Döbelin, N., Armbruster, T., Petersen, O.V. & Erambert, M.(2005): Heulandite-Ba, a new zeolite species from Norway. European Journal of Mineralogy, 17, 143-153
    • Valdres
      • Vang
Nordrum, F. S., Larsen, A.O. & Erambert, M. (2005): Minerals of the heulandite series in Norway- additional data and summary. Norsk Bergverksmuseum Skrift, 30: 98-112
UK
 
  • Scotland
    • North West Highlands
      • Strontian
Green, D.I., Tindle, A.G., Hubbard, N., McCallum, D., and Jackson, B. (2008) Heulandite-Sr and heulandite-Ba, two zeolite group minerals new to Britain from Whitesmith Mine, Strontian, Highland Region, Scotland. Journal of the Russell Society, vol. 11, 80-86.
Mineral and/or Locality  
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