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Loseyite
A valid IMA mineral species - grandfathered
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About Loseyite
Formula:
(Mn2+,Zn,Mg)4Zn3(CO3)2(OH)10
Colour:
White to colorless, may be tannish- brown due to staining; colourless in transmitted light. Examination of the type specimen at Harvard University suggests that the color of loseyite can vary when in daylight to "daylight LED" to fluorescent white light.
Lustre:
Vitreous, Sub-Vitreous, Resinous, Silky
Hardness:
3
Specific Gravity:
3.27
Crystal System:
Monoclinic
Name:
Named in 1929 by Lawson H. Bauer and Harry Berman in honor of miner and mineral collector, Samuel R. Losey [December 10, 1830 New jersey, USA - July 26, 1904 USA], of Franklin, New Jersey, USA. Frederack A. Canfield, Jr. briefly mentioned some of his family's 19th century sources for Franklin District minerals: "More Franklin minerals were collected by Samuel Woodruff than by both miners of the Losey family and by the several miners of the Kemble family." Samuel R. Losey's grandfather was Michael Rorick [1749-1832], one of the owners of a forge along the Wallkill River, about 1765, near where the Franklin Furnace was later erected in Hardyston, later called Franklin, New Jersey.
Type Locality:
Isostructural with:
This page provides mineralogical data about Loseyite.
Unique Identifiers
Mindat ID:
2438
Long-form identifier:
mindat:1:1:2438:5
IMA Classification of Loseyite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Mn2+4Zn2+3(CO3)2(OH)10
First published:
1929
Type description reference:
Classification of Loseyite
5.BA.30
5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
A : With Cu, Co, Ni, Zn, Mg, Mn
5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
A : With Cu, Co, Ni, Zn, Mg, Mn
16a.5.3.1
16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
5 : Miscellaneous
16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
5 : Miscellaneous
11.6.8
11 : Carbonates
6 : Carbonates of Zn and Cd
11 : Carbonates
6 : Carbonates of Zn and Cd
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 |
|---|---|---|
| Los | 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 Loseyite
Vitreous, Sub-Vitreous, Resinous, Silky
Transparency:
Transparent, Translucent
Colour:
White to colorless, may be tannish- brown due to staining; colourless in transmitted light. Examination of the type specimen at Harvard University suggests that the color of loseyite can vary when in daylight to "daylight LED" to fluorescent white light.
Comment:
Originally said to be blue white, but only to suggest that it was not pale yellow, etc.
Streak:
White
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.27 g/cm3 (Measured) 3.34 g/cm3 (Calculated)
Optical Data of Loseyite
Type:
Biaxial (+)
RI values:
nα = 1.637 nβ = 1.648 nγ = 1.676
2V:
Measured: 64° , Calculated: 66°
Birefringence:
0.029
Max. Birefringence:
δ = 0.039
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:
High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
relatively weak
Optical Extinction:
Inclined, Y = b
Chemistry of Loseyite
Mindat Formula:
(Mn2+,Zn,Mg)4Zn3(CO3)2(OH)10
Element Weights:
Crystallography of Loseyite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
A2/a
Cell Parameters:
a = 16.408(7) Å, b = 5.540(3) Å, c = 15.150(4) Å
β = 95.48(3)°
β = 95.48(3)°
Ratio:
a:b:c = 2.962 : 1 : 2.735
Unit Cell V:
1,370.85 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals may form subparallel aggregates and radiating bundles of small lath-like white crystals elongated [010]; also jackstraw clusters or single crystals. May be confused with chlorophoenicite, but the latter may have a somewhat fibrous appearance.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
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Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
|---|---|---|---|---|---|---|---|
| 0009744 | Loseyite | Hill R J (1981) The structure of loseyite Acta Crystallographica B37 1323-1328 |  | 1981 | Franklin, New Jersey | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.49 Å | (80) |
| 5.26 Å | (20) |
| 4.89 Å | (40) |
| 3.80 Å | (90) |
| 3.68 Å | (100) |
| 3.54 Å | (60) |
| 3.43 Å | (40) |
| 2.95 Å | (40) |
| 2.79 Å | (60) |
| 2.77 Å | (60) |
| 2.63 Å | (100) |
| 2.54 Å | (70) |
| 2.36 Å | (50) |
| 2.30 Å | (50) |
| 2.17 Å | (50) |
| 2.15 Å | (50) |
| 1.90 Å | (40) |
| 1.77 Å | (30) |
| 1.72 Å | (20) |
| 1.67 Å | (20) |
| 1.62 Å | (10) |
| 1.60 Å | (40) |
| 1.57 Å | (40) |
| 1.54 Å | (40) |
Comments:
JCPDS 17-206
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
| High-? alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits |
Type Occurrence of Loseyite
General Appearance of Type Material:
Small lath-shaped bluish-white crystals loosely grouped in radiating bundles.
Place of Conservation of Type Material:
1) National School of Mines, Paris, France.
2) Harvard University, Cambridge, Massachusetts, 89344.
3) National Museum of Natural History, Washington, D.C., USA, 95984, 162599.
2) Harvard University, Cambridge, Massachusetts, 89344.
3) National Museum of Natural History, Washington, D.C., USA, 95984, 162599.
Geological Setting of Type Material:
Metamorphosed stratiform zinc orebody
Associated Minerals at Type Locality:
Other Language Names for Loseyite
Common Associates
Associations Based on Photo Data:
| 6 photos of Loseyite associated with Pyrochroite | Mn(OH)2 |
| 5 photos of Loseyite associated with Calcite | CaCO3 |
Related Minerals - Strunz-mindat Grouping
| 5.BA.05 | Azurite | Cu3(CO3)2(OH)2 |
| 5.BA.10 | Mcguinnessite | (Mg,Cu)2(CO3)(OH)2 |
| 5.BA.10 | Zincrosasite | (Zn,Cu)2(CO3)(OH)2 |
| 5.BA.10 | Parádsasvárite | Zn2(CO3)(OH)2 |
| 5.BA.10 | Rosasite | (Cu,Zn)2(CO3)(OH)2 |
| 5.BA.10 | Nullaginite | Ni2(CO3)(OH)2 |
| 5.BA.10 | Georgeite | [Cu(OH)2-x(H2O)x][CO3]x/2 |
| 5.BA.10 | Glaukosphaerite | (Cu,Ni)2(CO3)(OH)2 |
| 5.BA.10 | Pokrovskite | Mg2(CO3)(OH)2 |
| 5.BA.10 | Kolwezite | CuCo(CO3)(OH)2 |
| 5.BA.10 | Chukanovite | Fe2+2(CO3)(OH)2 |
| 5.BA.10 | Malachite | Cu2(CO3)(OH)2 |
| 5.BA.10 | Perchiazziite | Co2(CO3)(OH)2 |
| 5.BA.15 | Aurichalcite | (Zn,Cu)5(CO3)2(OH)6 |
| 5.BA.15 | Hydrozincite | Zn5(CO3)2(OH)6 |
| 5.BA.20 | Holdawayite | Mn6(CO3)2(OH)7(Cl,OH) |
| 5.BA.25 | 'UM1977-03-COSiO:CaClH' | Ca10-11(CO3)7(SiO4)Cl1-2(OH)1-2 |
| 5.BA.25 | Defernite | Ca6(CO3)1.58(Si2O7)0.21(OH)7[Cl0.50(OH)0.08(H2O)0.42] |
| 5.BA.30 | Sclarite | Zn7(CO3)2(OH)10 |
Fluorescence of Loseyite
Not fluorescent in UV
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 Loseyite
mindat.org URL:
https://www.mindat.org/min-2438.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Loseyite
Localities for Loseyite
Showing 4 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.
Austria | |
| King et al. (2) +1 other reference |
| King et al. (2) +1 other reference |
| King et al. (2) +1 other reference |
USA (TL) | |
| Bauer et al. (1929) +2 other references |
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Franklin Mine, Franklin, Sussex County, New Jersey, USA