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Heulandite-Sr

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Formula:
(Sr,Na,Ca)5(Si27Al9)O72 · 24H2O
Colour:
White, Colorless, Red, Yellow, Brown, Green
Lustre:
Vitreous, Pearly
Hardness:
3 - 3½
Specific Gravity:
2.2
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 Sr. Despite having an international reputation, there are no known images of Henry Heuland.
The strontium analogue of Heulandite-Ba, Heulandite-Ca, Heulandite-K, and Heulandite-Na.


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Classification of Heulandite-SrHide

Approved
9.GE.05

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
E : Chains of T10O20 Tetrahedra
Dana 7th ed.:
77.1.4.1

Pronounciation of Heulandite-SrHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of Heulandite-SrHide

Vitreous, Pearly
Transparency:
Transparent, Translucent
Colour:
White, Colorless, Red, Yellow, Brown, Green
Streak:
White
Hardness:
3 - 3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on the {010}
Density:
2.2 g/cm3 (Measured)    2.24 g/cm3 (Calculated)

Optical Data of Heulandite-SrHide

Type:
Biaxial (+)
RI values:
nα = 1.476 - 1.506 nβ = 1.479 - 1.510 nγ = 1.479 - 1.517
2V:
Measured: 10° to 48°
Max Birefringence:
δ = 0.003 - 0.011
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v

Chemical Properties of Heulandite-SrHide

Formula:
(Sr,Na,Ca)5(Si27Al9)O72 · 24H2O
IMA Formula:
(Sr,Ca,Na)5(Si27Al9)O72 · 24H2O

Crystallography of Heulandite-SrHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 7.46 Å, b = 17.84 Å, c = 15.88 Å
β = 91.433°
Ratio:
a:b:c = 0.418 : 1 : 0.89
Unit Cell V:
2 ų
Z:
2

Occurrences of Heulandite-SrHide

Paragenetic Mode(s):

Type Occurrence of Heulandite-SrHide

Synonyms of Heulandite-SrHide

Other Language Names for Heulandite-SrHide

Relationship of Heulandite-Sr to other SpeciesHide

Other Members of this group:
Heulandite-Ba(Ba,Ca,K)5(Si27Al9)O72 · 22H2OMon. 2/m : B2/m
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

Common AssociatesHide

Associated Minerals Based on Photo Data:
Fluorapatite4 photos of Heulandite-Sr associated with Fluorapatite on mindat.org.
Calcite2 photos of Heulandite-Sr associated with Calcite on mindat.org.
Chabazite-Ca2 photos of Heulandite-Sr associated with Chabazite-Ca on mindat.org.
Brewsterite-Sr2 photos of Heulandite-Sr associated with Brewsterite-Sr on mindat.org.
Thomsonite-Ca1 photo of Heulandite-Sr associated with Thomsonite-Ca on mindat.org.
Strontianite1 photo of Heulandite-Sr associated with Strontianite on mindat.org.
Chabazite1 photo of Heulandite-Sr associated with Chabazite 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-Ba(Ba,Ca,K)5(Si27Al9)O72 · 22H2OMon. 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-SrHide

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.
Lucchetti, G., Massa, B., Penco, A.M. (1982) Strontian heulandite from Campegli (Eastern Ligurian ophiolites, Italy). Neues Jahrbuch für Mineralogie, Monatshefte: 541-550.
Comodi, P., Gatta, G.D., Zanazzi, P.F. (2001) High-pressure structural behavior of heulandite. European Journal of Mineralogy: 15: 247-255.
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-SrHide

Localities for Heulandite-SrHide

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
 
  • British Columbia
    • Osoyoos Mining Division
      • Olalla
Tschernich, R. (1992): Zeolites of the World, p.51,254
Italy (TL)
 
  • Liguria
    • Genova Province
      • Castiglione Chiavarese
        • Campegli
Lucchetti, G., Massa, B., and Penco, A.M. (1982) Strontian heulandite from Campegli (Eastern Ligurian ophiolites, Italy). Neues Jahrbuch für Mineralogie, Monatshefte, 541-550.; Ciuffardi, M. and Odicino, G. (2008) La miniera Sant'Elena di Campegli. PRIE volume 4 luglio-settembre 2008, 96-105.
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
 
  • Nordland
    • Fauske
      • Sulitjelma
Nordrum, F. S. ; Larsen, A. O. & Erambert, M. (2003): Minerals of the heulandite series in Norway - a progress report. Norsk Bergverksmuseum skrift 25: 51-62
  • Oppland
    • Sel
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.
  • Sogn og Fjordane
    • Luster
      • Berdalen
        • Hurrungane
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
Russia
 
  • Northern Region
    • Murmanskaya Oblast'
      • Lovozero Massif
        • Seidozero Lake
Yakovenchuk, V.N., Pakhomovsky, Ya.A., Men’shikov, Yu.P., Mikhailova, J.A., and Ivanyuk, G.Yu. (2007): Canadian Mineralogist 45, 451-456.
Pekov, I.V. (2000): Lovozero Massif. Moscow, Ocean Pictures Ltd, 480 pp.
UK
 
  • Scotland
    • North West Highlands
      • Strontian
UK Journal of Mines & Minerals, vol. 29, p. 15.; 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.
USA
 
  • California
    • San Bernardino Co.
      • Ord District
        • Ord Mts
          • Ord Mountain
            • Ord Mountain Mine (Ord Mountain Mine System; Ord Mine; Ord Mountain deposits; Osborn; Rio Vista claim; Brilliant claim; Josephine claim; Belgium claim; Copper Junction claim)
MarekC personal collection 2014
Mineral and/or Locality  
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