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Heulandite-Na Mineral Data

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General Heulandite-Na Information

Help on Chemical  Formula: Chemical Formula: (Na,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O)
Help on Composition: Composition: Molecular Weight = 2,725.48 gm
   Potassium   0.79 %  K     0.95 % K2O
   Sodium      3.36 %  Na    4.53 % Na2O
   Calcium     2.60 %  Ca    3.64 % CaO
   Aluminum    7.76 %  Al   14.66 % Al2O3
   Silicon    28.85 %  Si   61.73 % SiO2
   Hydrogen    1.61 %  H    14.37 % H2O
   Oxygen     55.03 %  O
             ______        ______ 
             100.00 %       99.88 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3.98Ca1.77K0.55Al7.84Si28O72•21.74(H2O)
Help on Environment: Environment: Low temperature zeolite found in a wide variety of geologic environments: volcanic rocks, metamorphic rocks, pegmatites, tuffs, and deep-sea sediments.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Challis, Custer County, Idaho, U.S.A. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the English mineral collector, John Henry Heuland (1778-1856), a British mineral collector and dealer. The Na-dominant member of the heulandite series.
Help on Name Pronunciation: Name Pronunciation: Heulandite-Na + Pronunciation Say HEULANDITE-NA
Help on Synonym: Synonym: Beaumontite
  Lamellar zeolite
 

Heulandite-Na Image

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  Heulandite-Na

Comments: Orange tabular crystals of heulandite-Na lining a vug.
Location: Warm Spring Creek, Challis, Custer County, Idaho, USA. Scale: See Image.
© Rruff Database

Heulandite-Na Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9826:1:0.4117
Help on Cell Dimensions: Cell Dimensions: a = 17.67, b = 17.982, c = 7.404, Z = 1; beta = 116.4° V = 2,107.22 Den(Calc)= 2.15
Help on Crystal System: Crystal System: Monoclinic Space Group: C 2/m, Cm, C 2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.917(1), 2.959(0.9), 8.845(0.8),
 

Physical Properties of Heulandite-Na

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: White, Reddish white, Grayish white, Brownish white, Yellow.
Help on Density: Density: 2.2
Help on Diaphaneity: Diaphaneity: Transparent to subtranslucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Heulandite-Na

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.004 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.019 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.23,KPDmeas= 0.2248,KC= 0.2257
Ncalc = 1.49 - 1.5
Help on Optical Data: Optical Data: Biaxial (+), a=1.476-1.506, b=1.479-1.51, g=1.479-1.517, bire=0.0030-0.0110, 2V(Calc)=0-76, 2V(Meas)=10-48. Dispersion r > v.
 

Calculated Properties of Heulandite-Na

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.22 gm/cc
note: Specific Gravity of Heulandite-Na =2.20 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEHeulandite-Na = 1.81 barns/electron
U=PEHeulandite-Na x relectron= 4.03 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 11.50 (Gamma Ray American Petroleum Institute Units)
Concentration of Heulandite-Na per GRapi unit = 8.70 (%)

Estimated Radioactivity from Heulandite-Na - barely detectable

 

Heulandite-Na Classification

Help on  Dana Class: Dana Class: 77.01.04.01a (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
Help on  Strunz Class: 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 Heulandite-Na Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Collectors Book of Fluorescent Minerals) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Heulandite-Na :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Heulandite-Na Specimen Label here :

Heulandite-Na

(Na,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O)
Dana No: 77.01.04.01a Strunz No: 09.GE.05
Locality:

 

Notes:

 

 
   
 


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