Clinoptilolite-K Mineral Data

Clinoptilolite-K Mineral Data +

General Clinoptilolite-K Information

Chemical Formula:

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

Composition:

Molecular Weight = 2,830.35 gm

Potassium 6.52 % K 7.85 % K₂O

Sodium 0.69 % Na 0.93 % Na₂O

Strontium 1.15 % Sr 1.35 % SrO

Calcium 0.06 % Ca 0.08 % CaO

Magnesium 0.16 % Mg 0.27 % MgO

Manganese 0.02 % Mn 0.03 % MnO

Aluminum 6.22 % Al 11.74 % Al₂O₃

Iron 0.06 % Fe 0.08 % FeO

Silicon 29.15 % Si 62.37 % SiO₂

Hydrogen 1.71 % H 15.28 % H₂O

Oxygen 54.27 % O

______ ______

100.00 % 99.98 % = TOTAL OXIDE

Empirical Formula:

Na_0.85K_4.72Ca_0.04Sr_0.37Mg_0.19Fe²⁺_0.03Mn²⁺_0.01Al_6.52Si_29.38O₇₂·24(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

Clinoptilolite-K Image

Images:

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

Clinoptilolite-K Crystallography

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

Physical Properties of Clinoptilolite-K

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

Optical Properties of Clinoptilolite-K

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.

Calculated Properties of Clinoptilolite-K

Electron Density:

r_electron=2.17 gm/cc
note: r_{Clinoptilolite-K}=2.15 gm/cc.

Fermion Index

Fermion Index = 0.01486
Boson Index = 0.98514

Photoelectric:

PE_{Clinoptilolite-K}= 3.22 barns/electron
U=PE_{Clinoptilolite-K} x r_electron= 6.99 barns/cc.

Radioactivity:

GRapi = 95.03 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Clinoptilolite-K - barely detectable

Clinoptilolite-K Classification

Dana Class:

77.1.4.2 (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.23-20 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-K Information

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 :

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: