Meyrowitzite
A valid IMA mineral species
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Formula:
Ca(UO2)(CO3)2 · 5H2O
Colour:
Yellow
Lustre:
Vitreous
Hardness:
2
Specific Gravity:
2.70
Crystal System:
Monoclinic
Name:
Named in honor of Robert Meyrowitz (14 September 1916 – 6 July 2013), American analytical chemist. He worked on the Manhattan Project and later joined the U.S. Geological Survey (USGS). He formulated high-index immersion liquids that are still used for optical determinations and worked on the descriptions of several new minerals (brockite, duttonite, goldmanite, hendersonite, metazellerite, ningyoite, sahamalite, sherwoodite, simplotite, weeksite, and zellerite). Among them was zellerite, the dimorph of meyrowitzite.
Dimorph of:
This page provides mineralogical data about Meyrowitzite.
Unique Identifiers
Mindat ID:
52991
Long-form identifier:
mindat:1:1:52991:8
GUID
(UUID V4):
(UUID V4):
4e840d9e-0f33-4971-adaa-961263f1bfad
IMA Classification of Meyrowitzite
Approved
Approval year:
2018
First published:
2019
Classification of Meyrowitzite
5.EC.20
5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
C : UO2:CO3 < 1:1 - 1:2
5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
C : UO2:CO3 < 1:1 - 1:2
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 |
|---|---|---|
| Mey | 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 Meyrowitzite
Vitreous
Transparency:
Transparent
Colour:
Yellow
Streak:
Very pale yellow
Hardness:
2 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{101}
{101}
Fracture:
Irregular/Uneven
Density:
2.70(2) g/cm3 (Measured) 2.714 g/cm3 (Calculated)
Optical Data of Meyrowitzite
Type:
Biaxial (+)
RI values:
nα = 1.520(2) nβ = 1.528(2) nγ = 1.561(2)
2V:
Measured: 53.0° (6)
Max Birefringence:
δ = 0.041
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:
weak, r>v
Pleochroism:
Visible
Comments:
pale yellow, X ≈ Y < Z
Chemistry of Meyrowitzite
Mindat Formula:
Ca(UO2)(CO3)2 · 5H2O
Crystallography of Meyrowitzite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 12.376(3) Å, b = 16.087(1) Å, c = 20.134(2) Å
β = 107.68(1)°
β = 107.68(1)°
Ratio:
a:b:c = 0.769 : 1 : 1.252
Unit Cell V:
3819.3 ų
Z:
12
Morphology:
Elongate on [010], flattened on {100}, and exhibiting the forms {100}, {001}, {101}, {110}, and {011}.
Comment:
Spacegroup: P21/n
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 12.11 Å | (100) |
| 9.52 Å | (48) |
| 8.19 Å | (59) |
| 5.96 Å | (68) |
| 5.04 Å | (79) |
| 4.359 Å | (45) |
| 4.057 Å | (32) |
| 3.944 Å | (31) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47f : [Uranyl (U⁶⁺) minerals] |
Type Occurrence of Meyrowitzite
General Appearance of Type Material:
Blades to 0.2 mm on on calcite-veined asphaltum
Place of Conservation of Type Material:
Cotype material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 66789 and 66790
Associated Minerals at Type Locality:
Reference:
Kampf, A.R., Plášil, J.,Olds, T.A., Nash, B.P., Marty, J., Belkin, H.E. (2019) Meyrowitzite, Ca(UO2)(CO3)2·5H2O, a new mineral with a novel uranyl-carbonate sheet. American Mineralogist: 104(4): 603–610.
Synonyms of Meyrowitzite
Related Minerals - Strunz-mindat Grouping
| 5.EC.05 | Fontanite | Ca(UO2)3(CO3)4 · 3H2O |
| 5.EC.10 | Metazellerite | Ca(UO2)(CO3)2 · 3H2O |
| 5.EC.10 | Zellerite | Ca(UO2)(CO3)2 · 5H2O |
| 5.EC.15 | Ewingite | Mg8Ca8(UO2)24(CO3)30O4(OH)12(H2O)138 |
Fluorescence of Meyrowitzite
Using 405 nm laser, weak greenish yellow to moderate greenish blue
Other Information
Notes:
soluble in water
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 Meyrowitzite
mindat.org URL:
https://www.mindat.org/min-52991.html
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References for Meyrowitzite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2018) CNMNC Newsletter No. 44, New minerals and nomenclature modifications approved in 2018. Mineralogical Magazine, 82 (4) 1015-1021 doi:10.1180/mgm.2018.148
Localities for Meyrowitzite
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.
USA (TL) | |
| Kampf et al. (2019) |
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