Clinoptilolite-Ca Mineral Data

Clinoptilolite-Ca Mineral Data +

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General Clinoptilolite-Ca Information

Chemical Formula:

(Ca,Na,K)2-3Al3(Al,Si)2Si13O36·12(H2O)

Composition:

Molecular Weight = 2,742.13 gm

Potassium 1.50 % K 1.80 % K₂O

Sodium 1.48 % Na 1.99 % Na₂O

Calcium 2.78 % Ca 3.89 % CaO

Magnesium 0.15 % Mg 0.25 % MgO

Aluminum 6.61 % Al 12.49 % Al₂O₃

Silicon 29.91 % Si 63.98 % SiO₂

Hydrogen 1.74 % H 15.57 % H₂O

Oxygen 55.84 % O

______ ______

100.00 % 99.97 % = TOTAL OXIDE

Empirical Formula:

Ca_1.9Na_1.76K_1.05Mg_0.17Al_6.72Si_29.2O₇₂·23.7(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

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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

Physical Properties of Clinoptilolite-Ca

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

Optical Properties of Clinoptilolite-Ca

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.

Calculated Properties of Clinoptilolite-Ca

Electron Density:

r_electron=2.18 gm/cc
note: r_{Clinoptilolite-Ca}=2.15 gm/cc.

Fermion Index

Fermion Index = 0.01442
Boson Index = 0.98558

Photoelectric:

PE_{Clinoptilolite-Ca}= 1.89 barns/electron
U=PE_{Clinoptilolite-Ca} x r_electron= 4.11 barns/cc.

Radioactivity:

GRapi = 21.89 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Clinoptilolite-Ca - barely detectable

Clinoptilolite-Ca Classification

Dana Class:

77.1.4.2b (77)Tectosilicate Zeolite group

(77.1)true zeolites

(77.1.4)Heulandite and related species

77.1.4.1 Heulandite-Ca (Ca,Na)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono

77.1.4.1a Heulandite-Na! (Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono

77.1.4.1b Heulandite-K! (K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 2/m

77.1.4.1c Heulandite-Sr! (Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono

77.1.4.1d Heulandite-Ba! (Ba,Ca,K,Na,Sr)5Al9Si27O72·22(H2O) C 2/m 2/m

77.1.4.2 Clinoptilolite-K (Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, C 2, Cm Mono

77.1.4.2a Clinoptilolite-Na! (Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, C 2, Cm Mono

77.1.4.2b Clinoptilolite-Ca ! (Ca,Na,K)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m 2/m

77.1.4.3 Stilbite-Ca NaCa4[Al8Si28O72]·n(H2O)(n=28-32) C 2/m 2/m

77.1.4.3a Stilbite-Na! Na3Ca3[Al8Si28O72]·n(H2O)(n=28-32) C 2/m 2/m

77.1.4.4 Stellerite CaAl2Si7O18·7(H2O) F mmm 2/m 2/m 2/m

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

VIII/J - Tectosilicates (network), with zeolite-structure, Bladed Zeolites

VIII/J.23 - Zeolite group, Heulandite - Barium-brewsterite series

VIII/J.23-06 Heulandite-Na! (Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono

VIII/J.23-08 Heulandite-K! (K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 2/m

VIII/J.23-10 Heulandite-Ca (Ca,Na)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono

VIII/J.23-12 Heulandite-Sr! (Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, Cm, C 2 Mono

VIII/J.23-18 Clinoptilolite-Na! (Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, C 2, Cm Mono

VIII/J.23-20 Clinoptilolite-K (Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m, C 2, Cm Mono

VIII/J.23-22 Clinoptilolite-Ca (Ca,Na,K)2-3Al3(Al,Si)2Si13O36·12(H2O) C 2/m 2/m

VIII/J.23-26 Stilbite-Na! Na3Ca3[Al8Si28O72]·n(H2O)(n=28-32) C 2/m 2/m

VIII/J.23-30 Stilbite-Ca NaCa4[Al8Si28O72]·n(H2O)(n=28-32) C 2/m 2/m

VIII/J.23-40 Barrerite (Na,K,Ca)2Al2Si7O18·6(H2O) Amma or Ammm 2/m 2/m 2/m

VIII/J.23-50 Stellerite CaAl2Si7O18·7(H2O) F mmm 2/m 2/m 2/m

VIII/J.23-60 Goosecreekite CaAl2Si6O16·5(H2O) P 2₁ 2

VIII/J.23-70 Epistilbite CaAl2Si6O16·5(H2O) C1 1

VIII/J.23-80 Brewsterite-Sr (Sr,Ba)Al4Si12O32·10(H2O) P 2₁/m 2/m

VIII/J.23-90 Brewsterite-Ba! (Ba,Sr)Al2Si6O16·5(H2O) P 2₁/m,P 2₁ Mono

Other Clinoptilolite-Ca Information

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 :

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: