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Heulandite-Na

Big Photo

Rats Nest Claim, Challis, Custer Co., Idaho, USA
© Chris Tucker

Show Heulandite-Na Photos (3)
Formula:
(Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
System:MonoclinicColour:White, Colorless, Red, ...
Lustre:Vitreous, PearlyHardness:3 - 3½
Name: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.


The sodium analogue of Heulandite-Ba, Heulandite-Ca, Heulandite-K, and Heulandite-Sr. Clinoptilolite-Na-Heulandite-Na Series.

Classification of Heulandite-Na

IMA status:Approved
Strunz 8th edition ID:8/J.23-06
Nickel-Strunz 10th (pending) edition ID:9.GE.05

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
E : Chains of T10O20 Tetrahedra
Dana 7th edition ID:77.1.4.1
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Type Occurrence of Heulandite-Na

Type Locality:Unnamed pit, Challis, Custer Co., Idaho, USA

Physical Properties of Heulandite-Na

Lustre:Vitreous, Pearly
Diaphaneity (Transparency):Transparent
Colour:White, Colorless, Red, Yellow, Brown, Green
Streak:White
Hardness (Mohs):3 - 3½
Tenacity:Brittle
Cleavage:Perfect
Perfect on the {010}
Density (measured):2.2 g/cm3
Density (calculated):2.12 g/cm3

Crystallography of Heulandite-Na

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/m {B1 1 2/m} {C2/m} {C1 2/m 1}
Cell Parameters:a = 7.46Å, b = 17.84Å, c = 15.88Å
β = 91.433°
Ratio:a:b:c = 0.418 : 1 : 0.89
Unit Cell Volume:V 2 ų
Z:2
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data: Peaks:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Heulandite-Na

Type:Biaxial (+)
RI values: nα = 1.476 - 1.506 nβ = 1.479 - 1.510 nγ = 1.479 - 1.517
2V:Measured: 10° to 48°
Maximum Birefringence:δ = 0.003 - 0.011

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v

Chemical Properties of Heulandite-Na

Formula:
(Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
Essential elements:Al, H, Na, O, Si
All elements listed in formula:Al, Ca, H, Na, O, Si

Relationship of Heulandite-Na to other Species

Series:Forms a series with Clinoptilolite-Na (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
9.GE.05Clinoptilolite-Ca
(Ca,Na,K)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Clinoptilolite-K
(K,Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Clinoptilolite-Na
(Na,K,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Heulandite-Ca
(Ca,Na)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Heulandite-K
(K,Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Heulandite-Sr
(Sr,Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Heulandite-Ba
(Ba,Ca,K,Na,Sr)
 
5
Al
 
9
Si
 
27
O
 
72
·22H
 
2
O
9.GE.10Stilbite-Ca
NaCa
 
4
[Al
 
9
Si
 
27
O
 
72
] · nH
 
2
O
9.GE.10Stilbite-Na
Na
 
3
Ca
 
3
[Al
 
8
Si
 
28
O
 
72
]·nH
 
2
O
9.GE.15Barrerite
(Na,K,Ca
 
0.5
)
 
2
[Al
 
2
Si
 
7
O
 
18
] · 7H
 
2
O
9.GE.15Stellerite
Ca[Al
 
2
Si
 
7
O
 
18
] · 7H
 
2
O
9.GE.20Brewsterite-Ba
(Ba,Sr)[Al
 
2
Si
 
6
O
 
16
] · 5H
 
2
O
9.GE.20Brewsterite-Sr
(Sr,Ba,Ca)[Al
 
2
Si
 
6
O
 
16
] · 5H
 
2
O
Related Minerals - Dana Grouping):

- +
77.1.4.1Heulandite-Ca
(Ca,Na)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
77.1.4.1Heulandite-K
(K,Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
77.1.4.1Heulandite-Sr
(Sr,Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
77.1.4.3Stilbite-Ca
NaCa
 
4
[Al
 
9
Si
 
27
O
 
72
] · nH
 
2
O
77.1.4.3Stilbite-Na
Na
 
3
Ca
 
3
[Al
 
8
Si
 
28
O
 
72
]·nH
 
2
O
77.1.4.5Barrerite
(Na,K,Ca
 
0.5
)
 
2
[Al
 
2
Si
 
7
O
 
18
] · 7H
 
2
O

Other Names for Heulandite-Na

Other Languages:
Russian:Гейландит-Na

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Heulandite-Na

Reference List:Merkle, A.B., and M. Slaughter (1968), Determination and refinement of the structure of heulandite: American Mineralogist: 53: 1120-1138.

Alberti, A. (1972), On the crystal structure of the zeolite heulandite: Tschermaks Mineralogische und Petrographische Mitteilungen: 18: 129-146.

Comodi, P., G.D. Gatta, & P.F. Zanazzi (2001), High-pressure structural behavior of heulandite: European Journal of Mineralogy: 15: 247-255.

Internet Links for Heulandite-Na

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  • Raman and XRD data at RRUFF project
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    Localities for Heulandite-Na

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Greece
     
    • Aegean Islands (Aiyaíon) Department
      • Kykládes Prefecture
        • Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon)
          • Tinos Island
            • Panormos Bay
    		Gunnar Farber specimens
    Italy
     
    • Piedmont
      • Verbano-Cusio-Ossola Province
        • Omegna
    		- Albertini,C. (2000) : Ritrovamenti nel Rio Inferno, Brughiere di Omegna. Prima segnalazione nel granito di Baveno : uranofane-beta - Rivista Mineralogica Italiana, Milano, XXIV, 2, 88-92.
    • Veneto
      • Vicenza Province
        • Monte di Malo
          • Contrada Vanzi
    		Carbonin, S., Manzone, A., Boscardin M., Pegoraro, S. (2003): Zeoliti del Vicentino: caratterizzazioni chimiche e ottiche nella serie dell'heulandite. Rivista Mineralogica Italiana, 4, 186-195.
    Japan
     
    • Kyushu Island
      • Fukuoka prefecture
        • Munakata
    		Ueno et al (1982) Sanko-Gakkai Kou'en-Youshi, 149.
    • Tokyo Prefecture
      • Ogasawara Islands
        • Chichijima Group
    		Mineralogical Journal Vol. 11 (1982) , No. 1 pp1-14
    Norway
     
    • Buskerud
    		Mineralogical Record: 32: 196.
    Russia
     
    • Eastern-Siberian Region
      • Transbaikalia (Zabaykalye)
        • Chitinskaya Oblast'
    		P.M. Kartashov data
    USA
     
    • California
      • Kern Co.
        • Kramer District
          • Boron
            • Kramer Borate deposit
              • U.S. Borax Mine (Pacific West Coast Borax Mine; Pacific Coast Borax Co. Mine; Boron Mine; U.S. Borax and Chemical Corp. Mine; Kramer Mine; Baker Mine)
                • Baker mine
    		Am Min 90:1186-1191; Tschernich, R. (1992): Zeolites of the World, 64
    • Idaho
      • Custer Co.
        • Challis
    		Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
    Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
    Fluorescent Zeolites and Associated Minerals from the Rat's Nest Mine, Challis, Idaho: John Cornish, Jan 7, 2005
    Tschernich, R. (1992): Zeolites of the World, p.349
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 3rd Nov 2009 21:23:10