Haiweeite
A valid IMA mineral species
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About Haiweeite
Formula:
Ca(UO2)2[Si5O12(OH)2] · 6H2O
Colour:
Pale yellow, greenish-yellow
Lustre:
Pearly
Hardness:
3½
Specific Gravity:
3.35
Crystal System:
Orthorhombic
Name:
Named by T.C. McBurney and Joseph Murdoch in 1959 for the Haiwee Reservoir, California, located near the type locality.
Type Locality:
This page provides mineralogical data about Haiweeite.
Unique Identifiers
Mindat ID:
1802
Long-form identifier:
mindat:1:1:1802:5
GUID
(UUID V4):
(UUID V4):
08291bc5-993d-4edd-8761-41d52c5b3c0b
IMA Classification of Haiweeite
Classification of Haiweeite
9.AK.25
9 : SILICATES (Germanates)
A : Nesosilicates
K : Uranyl neso- and polysilicates
9 : SILICATES (Germanates)
A : Nesosilicates
K : Uranyl neso- and polysilicates
53.3.2.2
53 : NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
3 : Insular SiO4 Groups and Other Anions of Complex Cations with (UO2)
53 : NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
3 : Insular SiO4 Groups and Other Anions of Complex Cations with (UO2)
14.16.12
14 : Silicates not Containing Aluminum
16 : Silicates of U
14 : Silicates not Containing Aluminum
16 : Silicates of U
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Hwe | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Haiweeite
Pearly
Transparency:
Translucent
Colour:
Pale yellow, greenish-yellow
Streak:
White
Hardness:
3½ on Mohs scale
Cleavage:
Distinct/Good
On {100}
On {100}
Density:
3.35 g/cm3 (Measured) 4.93 g/cm3 (Calculated)
Optical Data of Haiweeite
Type:
Biaxial (-)
RI values:
nα = 1.560 - 1.571 nβ = 1.575 - 1.580 nγ = 1.578 - 1.582
2V:
Measured: 15° , Calculated: 46° to 50°
Max Birefringence:
δ = 0.018
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:
Low
Dispersion:
r > v strong
Comments:
Y = pale yellow; Z = colorless. Y = b.
Chemistry of Haiweeite
Mindat Formula:
Ca(UO2)2[Si5O12(OH)2] · 6H2O
Crystallography of Haiweeite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcn
Setting:
Pbcn
Cell Parameters:
a = 18.3000(5) Å, b = 14.2331(3) Å, c = 17.9192(5) Å
Ratio:
a:b:c = 1.286 : 1 : 1.259
Unit Cell V:
4,667.34 ų (Calculated from Unit Cell)
Z:
8
Comment:
Crystal from Teofilo Otoni, Minas Gerais, Brazil
Crystal Structure
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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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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) |
|---|---|---|---|---|---|---|---|
| 0019934 | Haiweeite | Plasil J, Fejfarova K, Cejka J, Dusek M, Skoda R, Sejkora J (2013) Revision of the crystal structure and chemical formula of haiweeite, Ca(UO2)2(Si5O12)(OH)2*6H2O American Mineralogist 98 718-723 | 2013 | Teofilo Otoni, Minas Gerais, Brazil | 0 | 293 | |
| 0005732 | Haiweeite | Burns P C (2001) A new uranyl silicate sheet in the structure of haiweeite and comparison to other uranyl silicates The Canadian Mineralogist 39 1153-1160 |  | 2001 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.14 Å | (100) |
| 7.05 Å | (40) |
| 4.56 Å | (60) |
| 4.42 Å | (60) |
| 3.54 Å | (40) |
| 3.19 Å | (50) |
| 3.11 Å | (50) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23) | |
| 25 : Evaporites (prebiotic) |
Type Occurrence of Haiweeite
General Appearance of Type Material:
Spherulitic aggregates, or single flakelike grains, on fracture surfaces in granite.
Synonyms of Haiweeite
Other Language Names for Haiweeite
Spanish:Haiweeita
Ranquilita
Ranquilita
Common Associates
Associated Minerals Based on Photo Data:
| 61 photos of Haiweeite associated with Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| 43 photos of Haiweeite associated with Fluorite | CaF2 |
| 20 photos of Haiweeite associated with Gypsum | CaSO4 · 2H2O |
| 11 photos of Haiweeite associated with Calcite | CaCO3 |
| 10 photos of Haiweeite associated with Parauranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| 9 photos of Haiweeite associated with Opal | SiO2 · nH2O |
| 8 photos of Haiweeite associated with Phosphuranylite | KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O |
| 7 photos of Haiweeite associated with Albite | Na(AlSi3O8) |
| 3 photos of Haiweeite associated with Selenite | CaSO4 · 2H2O |
| 2 photos of Haiweeite associated with Phurcalite | Ca2(UO2)3(PO4)2O2 · 7H2O |
Related Minerals - Strunz-mindat Grouping
| 9.AK. | Orlite | Pb3(UO2)3(Si2O7)2 · 6H2O |
| 9.AK.05 | Soddyite | (UO2)2SiO4 · 2H2O |
| 9.AK.10 | Cuprosklodowskite | Cu(UO2)2(SiO3OH)2 · 6H2O |
| 9.AK.10 | Oursinite | Co(UO2)2(SiO3OH)2 · 6H2O |
| 9.AK.10 | Sklodowskite | Mg(UO2)2(SiO3OH)2 · 6H2O |
| 9.AK.15 | Boltwoodite | (K,Na)(UO2)(SiO3OH) · 1.5H2O |
| 9.AK.15 | Kasolite | Pb(UO2)(SiO4) · H2O |
| 9.AK.15 | Natroboltwoodite | Na(UO2)(SiO3OH) · H2O |
| 9.AK.15 | Parauranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| 9.AK.15 | Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| 9.AK.20 | Swamboite-(Nd) | Nd0.333[(UO2)(SiO3OH)](H2O)~2.5 |
| 9.AK.25 | Metahaiweeite | Ca(UO2)2Si6O15 · nH2O |
| 9.AK.30 | Weeksite | K2(UO2)2(Si5O13) · 4H2O |
| 9.AK.30 | Coutinhoite | ThxBa(1-2x)(UO2)2Si5O13 · (H2O)1+y (0 < x < 0.5 and 0 < y < (2+x)) |
| 9.AK.35 | Magnioursilite | Mg4(UO2)4(Si2O5)5(OH)6 · 20H2O |
| 9.AK.35 | Calcioursilite | Ca4(UO2)4(Si2O5)5(OH)6 · 15H2O |
| 9.AK.40 | Uranosilite | UO3 · 7SiO2 |
Fluorescence of Haiweeite
Weak dull-green
Other Information
Health Risks:
Contains uranium. Wash hands after handling. Do not lick or ingest. Store in uninhabited areas.
Internet Links for Haiweeite
mindat.org URL:
https://www.mindat.org/min-1802.html
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References for Haiweeite
Reference List:
McBurney, T. C., Murdoch, J. (1959) Haiweeite, a new uranium mineral from California. American Mineralogist, 44 (7-8) 839-843
(1962) International Mineralogical Association: Commission on New Minerals and Mineral Names. Mineralogical Magazine and Journal of the Mineralogical Society, 33 (258) 260-263 doi:10.1180/minmag.1962.033.258.09
Burns, P. C. (2001) A new uranyl silicate sheet in the structure of haiweeite and comparison to other uranyl silicates. The Canadian Mineralogist, 39 (4) 1153-1160 doi:10.2113/gscanmin.39.4.1153
Burns, Peter C. (2005) U6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. The Canadian Mineralogist, 43 (6) 1839-1894 doi:10.2113/gscanmin.43.6.1839
Frost, Ray L., Čejka, Jiří, Weier, Matt L., Martens, Wayde (2006) A Raman and infrared spectroscopic study of the uranyl silicates—Weeksite, soddyite and haiweeite: Part 2. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 63 (2) 305-312 doi:10.1016/j.saa.2005.05.015
Frost, Ray L., Čejka, Jiří, Weier, Matt L., Martens, Wayde, Kloprogge, J. Theo (2006) A Raman and infrared spectroscopic study of the uranyl silicates—Weeksite, soddyite and haiweeite. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 64 (2) 308-315 doi:10.1016/j.saa.2005.07.028
Localities for Haiweeite
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Austria | |
| Strasser (1989) |
Brazil | |
| A.M.D.V. Chaves (2005) |
| Pires et al. (2014) | |
| American Mineralogist: 84: 197-198. +1 other reference |
| American Mineralogist 54:966-969 |
| Fosfatos e Silicatos Secundários de ... | |
Canada | |
| ALEXANDRE et al. (2012) |
Chile | |
| A. Molina & M. Dini collections (based on XRD analysis) |
Czech Republic | |
| Pauliš et al. (2007) |
Greece | |
| Rieck et al. (2022) |
Japan | |
| K. Watanabe (1976) |
Mexico | |
| EDS analysis |
| Tony Peterson |
Namibia | |
| von Bezing (2007) +1 other reference |
| JAHN +2 other references |
Slovakia | |
| Martin Števko-unpublished |
Spain | |
| Tanago et al. (2012) |
Tajikistan | |
| Chukanov (2014) |
USA (TL) | |
| Van Nostrand Reinholt Press: 517. +3 other references |
| www.shannonsminerals.com |
| Smith (1991) |
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Nopal mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico