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Heulandite-Ca Mineral Data |
General Heulandite-Ca Information |
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(Ca,Na)2-3Al3(Al,Si)2Si13O36•12(H2O) | ||
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Molecular Weight = 2,825.14 gm | ||
Potassium 0.60 % K 0.72 % K2O | |||
Barium 0.29 % Ba 0.33 % BaO | |||
Sodium 1.03 % Na 1.38 % Na2O | |||
Strontium 0.16 % Sr 0.18 % SrO | |||
Calcium 5.06 % Ca 7.09 % CaO | |||
Magnesium 0.01 % Mg 0.01 % MgO | |||
Aluminum 8.95 % Al 16.91 % Al2O3 | |||
Silicon 26.54 % Si 56.78 % SiO2 | |||
Hydrogen 1.86 % H 16.59 % H2O | |||
Oxygen 55.51 % O | |||
______ ______ | |||
100.00 % 99.99 % = TOTAL OXIDE | |||
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Ca3.57Sr0.05Ba0.06Mg0.01Na1.26K0.43Al9.37Si26.7O72�26.02(H2O) | ||
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Low temperature zeolite found in a wide variety of geologic environments: volcanic rocks, metamorphic rocks, pegmatites, tuffs, and deep-sea sediments. | ||
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Valid Species (Pre-IMA) 1822 | ||
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Glasgow, Strathclyde (Dumbartonshire), Scotland. Link to MinDat.org Location Data. | ||
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Named after the English mineral collector, John Henry Heuland (1778-1856), a British mineral collector and dealer. Ca modifier added by zeolite nomenclature committee. | ||
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Heulandite-Ca + Pronunciation ![]() |
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Beaumontite | ||
Heulandite | |||
Lamellar zeolite | |||
Heulandite-Ca Image | |||
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Heulandite-Ca Crystallography |
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a:b:c =0.9603:1:0.4152 | ||
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a = 17.18, b = 17.89, c = 7.428, Z = 1; beta = 116.42° V = 2,044.55 Den(Calc)= 2.29 | ||
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Monoclinic Space Group: C 2/m, Cm, C 2 | ||
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By Intensity(I/Io): 3.917(1), 2.959(0.9), 8.845(0.8), | ||
Physical Properties of Heulandite-Ca |
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{010} Perfect | ||
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White, Reddish white, Grayish white, Brownish white, Yellow. | ||
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2.2 | ||
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Transparent to subtranslucent | ||
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Brittle - Generally displayed by glasses and most non-metallic minerals. | ||
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Crystalline - Coarse - Occurs as well-formed coarse sized crystals. | ||
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Tabular - Form dimensions are thin in one direction. | ||
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3-3.5 - Calcite-Copper Penny | ||
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Vitreous - Pearly | ||
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white | ||
Optical Properties of Heulandite-Ca |
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CI meas= 0.019 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.058 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2159,KPDmeas= 0.2248,KC= 0.2292 Ncalc = 1.5 - 1.52 |
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Biaxial (+), a=1.476-1.506, b=1.479-1.51, g=1.479-1.517, bire=0.0030-0.0110, 2V(Calc)=0-76, 2V(Meas)=10-48. Dispersion r > v. | ||
Calculated Properties of Heulandite-Ca |
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Bulk Density (Electron Density)=2.23 gm/cc note: Specific Gravity of Heulandite-Ca =2.20 gm/cc. |
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Fermion Index = 0.01 Boson Index = 0.99 |
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PEHeulandite-Ca = 3.32 barns/electron U=PEHeulandite-Ca x relectron= 7.41 barns/cc. |
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GRapi = 8.68 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Heulandite-Ca |
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Heulandite-Ca Classification |
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77.01.04.01 (77)Tectosilicate Zeolite group | ||
(77.01)true zeolites | |||
(77.01.04)Heulandite and related species | |||
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09.GE.05 09 - SILICATES (Germanates) | ||
09.G - Tektosilicates with Zeolitic H2O | |||
09.GE -Chains of T10O20 Tetrahedra | |||
Other Heulandite-Ca Information |
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NAME( Duda&Rejl90) PHYS. PROP.(Collectors Book of Fluorescent Minerals) OPTIC PROP.(Dana8) | ||
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Links to other databases for Heulandite-Ca : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Heulandite-Ca using: Visit our Advertisers for Heulandite-Ca : Ask about Heulandite-Ca here : Print or Cut-and-Paste your Heulandite-Ca Specimen Label here :
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