Heulandite-Na
A valid IMA mineral species
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About Heulandite-Na
Formula:
(Na,Ca,K)6(Si,Al)36O72 · 22H2O
Colour:
White, colorless, red, yellow, brown, green
Lustre:
Vitreous, Pearly
Hardness:
3 - 3½
Specific Gravity:
2.2
Crystal System:
Monoclinic
Member of:
Name:
Named in 1822 by Henry James Brooke in honor of Johann Heinrich "John Henry" Heuland [March 21, 1778 Beyreuth, Germany - November 16, 1856 Hastings, Sussex, England, UK], a mineral collector and mineral dealer living in England and for the suffix indicating dominant Na. Despite having an international reputation, there are no known images of Henry Heuland.
The sodium analogue of heulandite-Ba, heulandite-Ca, heulandite-K, and heulandite-Sr.
Clinoptilolite-Na-Heulandite-Na Series.
Clinoptilolite-Na-Heulandite-Na Series.
Unique Identifiers
Mindat ID:
6990
Long-form identifier:
mindat:1:1:6990:4
GUID
(UUID V4):
(UUID V4):
39c5e37f-3245-4d93-bfe7-3065b5350025
IMA Classification of Heulandite-Na
Approved
First published:
1924
Classification of Heulandite-Na
9.GE.05
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
E : Chains of T10O20 Tetrahedra
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
E : Chains of T10O20 Tetrahedra
Dana 7th ed.:
77.1.4.1
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Hul-Na | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Hul | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279. |
Hul | Siivolam & Schmid (2007) | Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download |
Hul | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371 |
Hul | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Hul | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30 |
Physical Properties of Heulandite-Na
Vitreous, Pearly
Transparency:
Transparent
Colour:
White, colorless, red, yellow, brown, green
Streak:
White
Hardness:
3 - 3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on the {010}
Perfect on the {010}
Density:
2.2 g/cm3 (Measured) 2.12 g/cm3 (Calculated)
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°
Max Birefringence:
δ = 0.003 - 0.011
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v
Chemistry of Heulandite-Na
Mindat Formula:
(Na,Ca,K)6(Si,Al)36O72 · 22H2O
Crystallography of Heulandite-Na
Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Space Group:
Bm
Setting:
Cm
Cell Parameters:
a = 7.46 Å, b = 17.84 Å, c = 15.88 Å
β = 91.433°
β = 91.433°
Ratio:
a:b:c = 0.418 : 1 : 0.89
Unit Cell V:
2 ų
Z:
2
Comment:
Space group: C2/m, Cm, or C2
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0001669 | Heulandite-Na | Gunter M E, Armbruster T, Kohler T, Knowles C R (1994) Crystal structure and optical properties of Na- and Pb-exchanged heulandite-group zeolites Atomic parameters from ICSD American Mineralogist 79 675-682 | 1994 | 0 | 293 | ||
0013884 | Heulandite-Na | Yang P, Armbruster T (1996) Na, K, Rb and Cs exchange in heulandite single-crystals: X-ray structure refinements at 100 K Journal of Solid State Chemistry 123 140-149 | 1996 | Nasik, India | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Image Loading
Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3a: Earth’s earliest Hadean crust | >4.50 |
10 : Basalt-hosted zeolite minerals | |
Stage 3b: Earth’s earliest hydrosphere | >4.45 |
14 : Hot springs, geysers, and other subaerial geothermal minerals | |
16 : Low-𝑇 aqueous alteration of Hadean subaerial lithologies (see also #23) | |
Near-surface Processes | |
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
24 : Authigenic minerals in terrestrial sediments (see also #17) | |
25 : Evaporites (prebiotic) | |
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
48 : Soil leaching zone minerals | <0.6 |
Type Occurrence of Heulandite-Na
General Appearance of Type Material:
As complete fillings of small vesicles in the rock, as drusy linings of cavities, and as thin crusts forming the first lining of cavities later filled with mordenite, chalcedony, or quartz.
Place of Conservation of Type Material:
No designated type specimen.
Geological Setting of Type Material:
A vesicular andesite flow interbedded with the Miocene lake sediments.
Associated Minerals at Type Locality:
Other Language Names for Heulandite-Na
Relationship of Heulandite-Na to other Species
Member of:
Other Members of this group:
Heulandite-Ba | (Ba,Ca,K)5(Si27Al9)O72 · 22H2O | Mon. 2/m : B2/m |
Heulandite-Ca | (Ca,Na)5(Si27Al9)O72 · 26H2O | Mon. 2/m : B2/m |
Heulandite-K | (K,Ca,Na)5(Si27Al9)O72 · 26H2O | Mon. 2/m : B2/m |
Heulandite-Sr | (Sr,Na,Ca)5(Si27Al9)O72 · 24H2O | Mon. m : Bm |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
6 photos of Heulandite-Na associated with Dolomite | CaMg(CO3)2 |
4 photos of Heulandite-Na associated with Opal-AN | SiO2 · nH2O |
2 photos of Heulandite-Na associated with Pyrite | FeS2 |
2 photos of Heulandite-Na associated with Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O |
1 photo of Heulandite-Na associated with Hydroxylapatite | Ca5(PO4)3(OH) |
1 photo of Heulandite-Na associated with Stilbite-Ca | NaCa4(Si27Al9)O72 · 28H2O |
1 photo of Heulandite-Na associated with Chalcedony | SiO2 |
1 photo of Heulandite-Na associated with Clinoptilolite-Na | Na6(Si30Al6)O72 · 20H2O |
1 photo of Heulandite-Na associated with Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
Related Minerals - Strunz-mindat Grouping
9.GE.05 | Clinoptilolite-Ca | Ca3(Si30Al6)O72 · 20H2O |
9.GE.05 | Clinoptilolite-K | K6(Si30Al6)O72 · 20H2O |
9.GE.05 | Clinoptilolite-Na | Na6(Si30Al6)O72 · 20H2O |
9.GE.05 | Heulandite-Ca | (Ca,Na)5(Si27Al9)O72 · 26H2O |
9.GE.05 | Heulandite-K | (K,Ca,Na)5(Si27Al9)O72 · 26H2O |
9.GE.05 | Heulandite-Sr | (Sr,Na,Ca)5(Si27Al9)O72 · 24H2O |
9.GE.05 | Heulandite-Ba | (Ba,Ca,K)5(Si27Al9)O72 · 22H2O |
9.GE.10 | Stilbite-Ca | NaCa4(Si27Al9)O72 · 28H2O |
9.GE.10 | Stilbite-Na | Na9(Si27Al9)O72 · 28H2O |
9.GE.15 | Barrerite | Na2(Si7Al2)O18 · 6H2O |
9.GE.15 | Stellerite | Ca4(Si28Al8)O72 · 28H2O |
9.GE.20 | Brewsterite-Ba | (Ba,Sr)[Al2Si6O16] · 5H2O |
9.GE.20 | Brewsterite-Sr | (Sr,Ba,Ca)[Al2Si6O16] · 5H2O |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Heulandite-Na
mindat.org URL:
https://www.mindat.org/min-6990.html
Please feel free to link to this page.
Please feel free to link to this page.
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Mineral Dealers:
References for Heulandite-Na
Reference List:
Merkle, A. B., Slaughter, M. (1968) Determination and refinement of the structure of heulandite. American Mineralogist, 53 (7-8) 1120-1138
Alberti, A. (1972) On the crystal structure of the zeolite heulandite. TMPM Tschermaks Mineralogische und Petrographische Mitteilungen, 18 (2). 129-146 doi:10.1007/bf01081798
Boles, James R. (1972) Composition, optical properties, cell dimensions, and thermal stability of some heulandite-group zeolites. American Mineralogist, 57 (9-10) 1463-1493 (sample #6)
Coombs, Douglas S., Alberti, Alberto, Armbruster, Thomas, Artioli, Gilberto, Colella, Carmine, Galli, Ermanno, Grice, Joel D., Liebau, Friedrich, Mandarino, Joseph A., Minato, Hideo, Nickel, Ernest H., Passaglia, Elio, Peacor, Donald R., Quartieri, Simona, Rinaldi, Romano, Ross, Malcolm I., Sheppard, Richard A., Tillmanns, Ekkehart, Vezzalini, Giovanna (1997) Recommended nomenclature for zeolite minerals; report of the Subcommittee on Zeolites of the International Mineralogical Association, Commission on New Minerals and Mineral Names. The Canadian Mineralogist, 35 (6) 1571-1606
Localities for Heulandite-Na
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
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Wolf Creek Pass, Mineral County, Colorado, USA