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.

Name Pronunciation:

Clinoptilolite-K + Pronunciation

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

Crystal Structure:

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Armbruster T , American Mineralogist , 78 (1993) p.260-264, Dehydration mechanism of clinoptilolite and heulandite: Single-crystal X-ray, study of Na-poor, Ca-, K-, Mg-rich clinoptilolite at 100 K, Sample Dehyd 3, Data obtained from the ICSD

Physical Properties of Clinoptilolite-K

Cleavage:

{010} Perfect

Color:

Colorless, White, Red.

Density:

2.1 - 2.2, Average = 2.15

Diaphaneity:

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

Luminescence:

Fluorescent, Short UV=light green.

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
Ncalc = 1.47 - 1.51

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:

Bulk Density (Electron Density)=2.17 gm/cc
note: Specific Gravity of Clinoptilolite-K =2.15 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

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)
Concentration of Clinoptilolite-K per GRapi unit = 1.05 (%)

Estimated Radioactivity from Clinoptilolite-K - barely detectable

Clinoptilolite-K Classification

Dana Class:

77.01.04.02 (77)Tectosilicate Zeolite group

(77.01)true zeolites

(77.01.04)Heulandite and related species

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

77.01.04.01a Heulandite-Na! (Na,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m, Cm, C 2 Mono

77.01.04.01b Heulandite-K! (K,Na,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m, Cm, C 2 2/m

77.01.04.01c Heulandite-Sr! (Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m, Cm, C 2 Mono

77.01.04.01d Heulandite-Ba! (Ba,Ca,K,Na,Sr)5Al9Si27O72•22(H2O) C 2/m 2/m

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

77.01.04.02a Clinoptilolite-Na! (Na,K,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m, C 2, Cm Mono

77.01.04.02b Clinoptilolite-Ca! (Ca,Na,K)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m 2/m

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

77.01.04.03a Stilbite-Na! Na3Ca3[Al8Si28O72]•n(H2O)(n=28-32) C 2/m 2/m

77.01.04.04 Stellerite CaAl2Si7O18•7(H2O) F mmm 2/m 2/m 2/m

77.01.04.05 Barrerite (Na,K,Ca)2Al2Si7O18•6(H2O) Amma or Ammm 2/m 2/m 2/m

Strunz Class:

09.GE.05 09 - SILICATES (Germanates)

09.G - Tektosilicates with Zeolitic H2O

09.GE -Chains of T10O20 Tetrahedra

09.GE.05 Clinoptilolite-Na! (Na,K,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m, C 2, Cm Mono

09.GE.05 Clinoptilolite-K (Na,K,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m, C 2, Cm Mono

09.GE.05 Clinoptilolite-Ca! (Ca,Na,K)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m 2/m

09.GE.05 Heulandite-Ca (Ca,Na)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m, Cm, C 2 Mono

09.GE.05 Heulandite-K! (K,Na,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m, Cm, C 2 2/m

09.GE.05 Heulandite-Na! (Na,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m, Cm, C 2 Mono

09.GE.05 Heulandite-Sr! (Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O) C 2/m, Cm, C 2 Mono

09.GE.05 Heulandite-Ba! (Ba,Ca,K,Na,Sr)5Al9Si27O72•22(H2O) C 2/m 2/m

Other Clinoptilolite-K Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(www.saint-hilaire.ca) 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 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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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: 77.01.04.02 Strunz No: 09.GE.05
Locality:

Notes: