General Clinoptilolite-K Information
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Chemical Formula: |
(Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) |
Composition: |
Molecular Weight = 2,830.35 gm |
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Potassium 6.52 % K 7.85 % K2O |
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Sodium 0.69 % Na 0.93 % Na2O |
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Strontium 1.15 % Sr 1.35 % SrO |
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Calcium 0.06 % Ca 0.08 % CaO |
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Magnesium 0.16 % Mg 0.27 % MgO |
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Manganese 0.02 % Mn 0.03 % MnO |
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Aluminum 6.22 % Al 11.74 % Al2O3 |
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Iron 0.06 % Fe 0.08 % FeO |
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Silicon 29.15 % Si 62.37 % SiO2 |
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Hydrogen 1.71 % H 15.28 % H2O |
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Oxygen 54.27 % O |
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______ ______ |
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100.00 % 99.98 % = TOTAL OXIDE |
Empirical Formula: |
Na0.85K4.72Ca0.04Sr0.37Mg0.19Fe2+0.03Mn2+0.01Al6.52Si29.38O72·24(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: |
Valid Species (Pre-IMA) 1923 |
Locality: |
Decomposed basalt at a high point on ridge running east from Hoodoo Mountain, Wyoming, USA. From an off-shore borehole, Japan (Ogihara and Iijima, 1990). Link to MinDat.org Location Data. |
Name Origin: |
The name reflects its inclined extinction and supposed similarity in composition to "ptilolite" (mordenite). K modifier added by zeolite nomenclatrue committee. |
Synonym: |
Clinoptilolite |
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Clinoptilolite-K Image |
Images:
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Clinoptilolite-K
Comments: Thin, bladed aggregates of authigenic clinoptilolite covering an altered rock fragment. SEM image of a core sample.
Location: Unknown.
Scale: Picture size 50 µ-m.
© OMNI Laboratories, Inc |
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Clinoptilolite-K Crystallography
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Axial Ratios: |
a:b:c =0.988:1:0.4138 |
Cell Dimensions: |
a = 17.688, b = 17.902, c = 7.409, Z = 1; beta = 116.5° V = 2,099.57 Den(Calc)= 2.24 |
Crystal System: |
MonoclinicSpace Group: C 2/m, C 2, Cm |
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Physical Properties of Clinoptilolite-K
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Cleavage: |
[010] Perfect |
Color: |
Colorless, White, Red. |
Density: |
2.1 - 2.2, Average = 2.15 |
Diaphaniety: |
Transparent |
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-K
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Gladstone-Dale: |
CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.04 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2169,KPDmeas= 0.226,KC= 0.226 |
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. |
Pleochroism (x): |
none. |
Pleochroism (y): |
none. |
Pleochroism (z): |
none. |
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Calculated Properties of Clinoptilolite-K
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Electron Density: |
relectron=2.17 gm/cc note: rClinoptilolite-K =2.15 gm/cc. |
Fermion Index |
Fermion Index = 0.01486 Boson Index = 0.98514 |
Photoelectric: |
PEClinoptilolite-K = 3.22 barns/electron U=PEClinoptilolite-K x relectron= 6.99 barns/cc. |
Radioactivity: |
GRapi = 95.03 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Clinoptilolite-K - barely detectable
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Clinoptilolite-K Classification
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Dana Class: |
77.1.4.2 (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.23-20 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-K Information
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References: |
NAME( Duda&Rejl90) PHYS. PROP.(Duda&Rejl90) OPTIC PROP.(Dana8) |
See Also: |
Links to other databases for Clinoptilolite-K :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 -Am. Min. Crystal Structure Database
4 -Athena
5 -Google Images
6 -Google Scholar
7 -MinDAT
8 -MinMax(Deutsch)
9 -MinMax(English)
10 -Mineralienatlas (Deutsch)
11 -QUT Mineral Atlas
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Print or Cut-and-Paste your Clinoptilolite-K Specimen Label here :
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Clinoptilolite-K
(Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O)
Dana No: 77.1.4.2 Strunz No: VIII/J.23-20
Locality:
Notes:
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