General Clinoptilolite-Ca Information
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Chemical Formula: |
(Ca,Na,K)2-3Al3(Al,Si)2Si13O36·12(H2O) |
Composition: |
Molecular Weight = 2,742.13 gm |
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Potassium 1.50 % K 1.80 % K2O |
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Sodium 1.48 % Na 1.99 % Na2O |
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Calcium 2.78 % Ca 3.89 % CaO |
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Magnesium 0.15 % Mg 0.25 % MgO |
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Aluminum 6.61 % Al 12.49 % Al2O3 |
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Silicon 29.91 % Si 63.98 % SiO2 |
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Hydrogen 1.74 % H 15.57 % H2O |
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Oxygen 55.84 % O |
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______ ______ |
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100.00 % 99.97 % = TOTAL OXIDE |
Empirical Formula: |
Ca1.9Na1.76K1.05Mg0.17Al6.72Si29.2O72·23.7(H2O) |
Environment: |
Most commonly formed as a devitrification product of silicic volcanic glass from tuffs. Also occurs in cavities in rhyolites, andesites, and basalts. |
IMA Status: |
Approved IMA 1977 (Dana # Added) |
Locality: |
Kuruma Pass, Fukushima Prefecture, Japan. Link to MinDat.org Location Data. |
Name Origin: |
From the Greek klino - "oblique" ptylon - "feather" and lithos - "stone.." The Ca-dominant member of the clinoptilolite series. |
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Clinoptilolite-Ca Crystallography
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Axial Ratios: |
a:b:c =0.9831:1:0.4119 |
Cell Dimensions: |
a = 17.66, b = 17.963, c = 7.4, Z = 1; beta = 116.47° V = 2,101.39 Den(Calc)= 2.17 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
X Ray Diffraction: |
By Intensity(I/Io): 3.971(1), 8.99(0.85), 3.91(0.7), |
Crystal Structure:
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Cappelletti P , Langella A , Cruciani G , European Journal of Mineralogy , 11 (1999) p.1051-1060, Crystal-chemistry and synchrotron Rietveld refinement, of two different clinoptilolites from volcanoclastites, of North-Western Sardinia, Sample: LAC1, Locality: volcanoclastites of North-Western Sardinia
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Physical Properties of Clinoptilolite-Ca
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Cleavage: |
[010] Perfect |
Color: |
White, Reddish white. |
Density: |
2.1 - 2.2, Average = 2.15 |
Diaphaniety: |
Transparent to Translucent |
Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
Habit: |
Crystalline - Fine - Occurs as well-formed fine sized crystals. |
Habit: |
Tabular - Form dimensions are thin in one direction. |
Hardness: |
3.5-4 - Copper Penny-Fluorite |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Optical Properties of Clinoptilolite-Ca
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Gladstone-Dale: |
CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2239,KPDmeas= 0.226,KC= 0.2279 |
Optical Data: |
Biaxial (+/-), a=1.476-1.491, b=1.479-1.493, g=1.479-1.497, bire=0.0030-0.0060, 2V(Calc)=0-72, 2V(Meas)=31-48. Dispersion r > v to r < v strong. |
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Calculated Properties of Clinoptilolite-Ca
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Electron Density: |
relectron=2.18 gm/cc note: rClinoptilolite-Ca =2.15 gm/cc. |
Fermion Index |
Fermion Index = 0.01442 Boson Index = 0.98558 |
Photoelectric: |
PEClinoptilolite-Ca = 1.89 barns/electron U=PEClinoptilolite-Ca x relectron= 4.11 barns/cc. |
Radioactivity: |
GRapi = 21.89 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Clinoptilolite-Ca - barely detectable
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Clinoptilolite-Ca Classification
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Dana Class: |
77.1.4.2b (77)Tectosilicate Zeolite group |
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(77.1)true zeolites |
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(77.1.4)Heulandite and related species |
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77.1.4.1 Heulandite-Ca (Ca,Na)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono |
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77.1.4.1a Heulandite-Na! (Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono |
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77.1.4.1b Heulandite-K! (K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 2/m |
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77.1.4.1c Heulandite-Sr! (Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono |
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77.1.4.1d Heulandite-Ba! (Ba,Ca,K,Na,Sr)5Al9Si27O72·22(H2O) C 2/m 2/m |
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77.1.4.2 Clinoptilolite-K (Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, C 2, Cm Mono |
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77.1.4.2a Clinoptilolite-Na! (Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, C 2, Cm Mono |
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77.1.4.2b Clinoptilolite-Ca ! (Ca,Na,K)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m 2/m |
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77.1.4.3 Stilbite-Ca NaCa4[Al8Si28O72]·n(H2O)(n=28-32) C 2/m 2/m |
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77.1.4.3a Stilbite-Na! Na3Ca3[Al8Si28O72]·n(H2O)(n=28-32) C 2/m 2/m |
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77.1.4.4 Stellerite CaAl2Si7O18·7(H2O) F mmm 2/m 2/m 2/m |
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77.1.4.5 Barrerite (Na,K,Ca)2Al2Si7O18·6(H2O) Amma or Ammm 2/m 2/m 2/m |
Strunz Class: |
VIII/J.23-22 VIII - Silicates |
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VIII/J - Tectosilicates (network), with zeolite-structure, Bladed Zeolites |
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VIII/J.23 - Zeolite group, Heulandite - Barium-brewsterite series |
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VIII/J.23-06 Heulandite-Na! (Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono |
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VIII/J.23-08 Heulandite-K! (K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 2/m |
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VIII/J.23-10 Heulandite-Ca (Ca,Na)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono |
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VIII/J.23-12 Heulandite-Sr! (Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono |
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VIII/J.23-18 Clinoptilolite-Na! (Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, C 2, Cm Mono |
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VIII/J.23-20 Clinoptilolite-K (Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, C 2, Cm Mono |
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VIII/J.23-22 Clinoptilolite-Ca (Ca,Na,K)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m 2/m |
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VIII/J.23-26 Stilbite-Na! Na3Ca3[Al8Si28O72]·n(H2O)(n=28-32) C 2/m 2/m |
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VIII/J.23-30 Stilbite-Ca NaCa4[Al8Si28O72]·n(H2O)(n=28-32) C 2/m 2/m |
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VIII/J.23-40 Barrerite (Na,K,Ca)2Al2Si7O18·6(H2O) Amma or Ammm 2/m 2/m 2/m |
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VIII/J.23-50 Stellerite CaAl2Si7O18·7(H2O) F mmm 2/m 2/m 2/m |
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VIII/J.23-60 Goosecreekite CaAl2Si6O16·5(H2O) P 21 2 |
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VIII/J.23-70 Epistilbite CaAl2Si6O16·5(H2O) C1 1 |
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VIII/J.23-80 Brewsterite-Sr (Sr,Ba)Al4Si12O32·10(H2O) P 21/m 2/m |
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VIII/J.23-90 Brewsterite-Ba! (Ba,Sr)Al2Si6O16·5(H2O) P 21/m,P 21 Mono |
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Other Clinoptilolite-Ca Information
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References: |
NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
See Also: |
Links to other databases for Clinoptilolite-Ca :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 -Google Images
4 -Google Scholar
5 -MinDAT
6 -MinMax(Deutsch)
7 -MinMax(English)
8 -Mineralienatlas (Deutsch)
9 -QUT Mineral Atlas
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Print or Cut-and-Paste your Clinoptilolite-Ca Specimen Label here :
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Clinoptilolite-Ca
(Ca,Na,K)2-3Al3(Al,Si)2Si13O36·12(H2O)
Dana No: 77.1.4.2b Strunz No: VIII/J.23-22
Locality:
Notes:
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