Mikenewite
A valid IMA mineral species
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Formula:
Mn2+(S4+O3) · 3H2O
Colour:
Yellowish in transmitted light.
Lustre:
Vitreous
Hardness:
2½ - 3
Specific Gravity:
2.48
Crystal System:
Monoclinic
Name:
Named in honor of Mike New (24 October 1945 - 23 July 2022) of Tucson, Arizona, USA. He was mineral dealer; owner and operator of Top Gem Minerals, Inc. of Tucson.
Dimorph of:
Unique Identifiers
Mindat ID:
470613
Long-form identifier:
mindat:1:1:470613:3
IMA Classification of Mikenewite
Approved
IMA Formula:
Mn2+(S4+O3)·3H2O
First published:
2023
Approval history:
IMA no. 2022-102
Type description reference:
Classification of Mikenewite
4.JE.
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
E : Sulfites
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
E : Sulfites
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 for Standard |
|---|---|---|
| Mnw | 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 Mikenewite
Vitreous
Transparency:
Transparent
Colour:
Yellowish in transmitted light.
Streak:
White
Hardness:
2½ - 3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{101}
{101}
Density:
2.48(5) g/cm3 (Measured) 2.467 g/cm3 (Calculated)
Optical Data of Mikenewite
Type:
Biaxial (+)
RI values:
nα = 1.606(5) nβ = 1.614(5) nγ = 1.627(1)
2V:
Measured: 69° (3), Calculated: 77°
Max. Birefringence:
δ = 0.021
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Dispersion:
r > v weak
Pleochroism:
Visible
Comments:
The pleochroism is from grey to yellowish
Chemistry of Mikenewite
Mindat Formula:
Mn2+(S4+O3) · 3H2O
Element Weights:
Elements listed:
Chemical Analysis
Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 1 | (Mn0.86Zn0.12Fe0.04Ca0.02)Σ1.04(S0.98O3) · 3H2O |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | San Judas Chimney, Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico | by EPMA; empirical formula basis: 6 O atoms pfu |
Crystallography of Mikenewite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 6.6390(3) Å, b = 8.8895(4) Å, c = 8.7900(4) Å
β = 96.095(2)°
β = 96.095(2)°
Ratio:
a:b:c = 0.747 : 1 : 0.989
Unit Cell V:
515.83 ų (Calculated from Unit Cell)
Z:
4
Comment:
the space group is P21/n
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.547 Å | (42) |
| 4.707 Å | (100) |
| 4.367 Å | (38) |
| 3.947 Å | (49) |
| 3.924 Å | (49) |
| 3.327 Å | (60) |
| 3.097 Å | (45) |
| 2.774 Å | (57) |
Type Occurrence of Mikenewite
General Appearance of Type Material:
Spheres of platy crystals.
Place of Conservation of Type Material:
Collections of the University of Arizona Alfie Norville Gem and Mineral Museum, 115 N Church Ave Ste 121, Tucson, AZ 85701, USA, catalogue no. 22724 (holotype), and the RRUFF Project, deposition no. R210021 (cotype).
Geological Setting of Type Material:
Oxidation zone.
Associated Minerals at Type Locality:
Other Language Names for Mikenewite
Dutch:Mikenewiet
German:Mikenewit
Common Associates
Associations Based on Photo Data:
| 1 photo of Mikenewite associated with Hemimorphite | Zn4Si2O7(OH)2 · H2O |
Related Minerals - Strunz-mindat Grouping
| 4.JE.X | Albertiniite | Fe2+(SO3) · 3H2O |
| 4.JE. | Vanpeltite | (Mo2O5)(S4+O3) · 4H2O |
| 4.JE.05 | Fleisstalite | FeSO3 · 3H2O |
| 4.JE.05 | Gravegliaite | Mn2+SO3 · 3H2O |
| 4.JE.10 | Hannebachite | CaSO3 · H2O |
| 4.JE.15 | Orschallite | Ca3(SO3)2(SO4) · 12H2O |
| 4.JE.20 | Scotlandite | PbSO3 |
| 4.JE.25 | Kollerite | (NH4)2Fe3+(SO3)2(OH) · H2O |
Other Information
Notes:
Insoluble in water, weakly soluble in HCl.
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 Mikenewite
mindat.org URL:
https://www.mindat.org/min-470613.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Mikenewite
Localities for Mikenewite
Showing 1 localities.
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.
Mexico (TL) | |
| Bosi et al. (2023) +1 other reference |
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