Garpenbergite
A valid IMA mineral species
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About Garpenbergite
Unique Identifiers
Mindat ID:
55440
Long-form identifier:
mindat:1:1:55440:0
GUID
(UUID V4):
(UUID V4):
e0feb6ac-d539-4d36-a98f-58a91c23a4c5
IMA Classification of Garpenbergite
Classification of Garpenbergite
4.BB.
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
B : With only medium-sized cations
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
B : With only medium-sized cations
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 |
---|---|---|
Gpb | 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 Garpenbergite
Sub-Adamantine, Greasy
Transparency:
Translucent
Colour:
Blackish to greyish brown
Comment:
Translucent in thin splinters.
Streak:
Light brown
Hardness:
5 on Mohs scale
Hardness:
VHN100=580 - 694 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Distinct/Good
On {010}
On {010}
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
4.47(1) g/cm3 (Calculated)
Optical Data of Garpenbergite
Anisotropism:
Weak to moderate.
Bireflectance:
None observed.
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
400nm | 8.93% | 9.50% |
420nm | 8.83% | 9.41% |
440nm | 8.73% | 9.30% |
460nm | 8.68% | 9.23% |
470nm | 8.67% | 9.20% |
480nm | 8.66% | 9.17% |
500nm | 8.65% | 9.17% |
520nm | 8.54% | 9.04% |
540nm | 8.50% | 9.05% |
546nm | 8.49% | 9.04% |
560nm | 8.49% | 9.02% |
580nm | 8.50% | 8.97% |
589nm | 8.47% | 8.96% |
600nm | 8.44% | 8.96% |
620nm | 8.44% | 8.93% |
640nm | 8.47% | 8.88% |
650nm | 8.48% | 8.90% |
660nm | 8.48% | 8.93% |
680nm | 8.46% | 8.91% |
700nm | 8.46% | 8.90% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 9.50%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Gray
Pleochroism:
Not Visible
Comments:
Overall refractive index (n) is calculated to 1.847, using Gladstone-Dale constants.
Chemistry of Garpenbergite
Mindat Formula:
Mn6◻AsSbO10(OH)2
Crystallography of Garpenbergite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 8.6790(9) Å, b = 18.906(2) Å, c = 6.1066 Å
Ratio:
a:b:c = 0.459 : 1 : 0.323
Unit Cell V:
1,002.00 ų (Calculated from Unit Cell)
Morphology:
Short-prismatic.
Comment:
The space group is Ibbm.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
5.00 Å | (25) |
4.42 Å | (30) |
3.48 Å | (20) |
3.050 Å | (30) |
2.665 Å | (100) |
2.616 Å | (40) |
2.586 Å | (25) |
1.545 Å | (45) |
Type Occurrence of Garpenbergite
General Appearance of Type Material:
Heavily fractured, short-prismatic and mostly subhedral crystals up to 1.5 mm in length.
Place of Conservation of Type Material:
Mineralogical collections of the Department of Geosciences, Swedish Museum of Natural History, Box 50007, 10405 Stockholm, Sweden, collection number GEO-NRM #20010351 and #20200040.
Associated Minerals at Type Locality:
Synonyms of Garpenbergite
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Garpenbergite associated with Carlfrancisite | Mn2+3(Mn2+,Mg,Fe3+,Al)42[As3+O3]2(As5+O4)4[(Si,As5+)O4]6[(As5+,Si)O4]2(OH)42 |
2 photos of Garpenbergite associated with Dolomite | CaMg(CO3)2 |
1 photo of Garpenbergite associated with Jacobsite | Mn2+Fe3+2O4 |
1 photo of Garpenbergite associated with Alleghanyite | Mn2+5(SiO4)2(OH)2 |
1 photo of Garpenbergite associated with Kutnohorite | CaMn2+(CO3)2 |
1 photo of Garpenbergite associated with Stibarsen | AsSb |
1 photo of Garpenbergite associated with Paradocrasite | Sb2(Sb,As)2 |
Related Minerals - Strunz-mindat Grouping
4.BB. | Elgoresyite | (Mg5Si2)O9 |
4.BB. | Chenmingite | FeCr2O4 |
4.BB. | Dellagiustaite | V2+Al2O4 |
4.BB. | Thermaerogenite | CuAl2O4 |
4.BB. | Chukochenite | LiAl5O8 |
4.BB. | Magnéliite | Ti3+2Ti4+2O7 |
4.BB. | Jianmuite | ZrTi4+Ti3+5Al3O16 |
4.BB.05 | Chromite | Fe2+Cr3+2O4 |
4.BB.05 | Cochromite | CoCr2O4 |
4.BB.05 | Coulsonite | Fe2+V3+2O4 |
4.BB.05 | Cuprospinel | Cu2+Fe3+2O4 |
4.BB.05 | Filipstadite | (Fe3+0.5Sb5+0.5)Mn2O4 |
4.BB.05 | Franklinite | Zn2+Fe3+2O4 |
4.BB.05 | Gahnite | ZnAl2O4 |
4.BB.05 | Galaxite | Mn2+Al2O4 |
4.BB.05 | Hercynite | Fe2+Al2O4 |
4.BB.05 | Jacobsite | Mn2+Fe3+2O4 |
4.BB.05 | Manganochromite | Mn2+Cr2O4 |
4.BB.05 | Magnesiocoulsonite | MgV2O4 |
4.BB.05 | Magnesiochromite | MgCr2O4 |
4.BB.05 | Magnesioferrite | MgFe3+2O4 |
4.BB.05 | Magnetite | Fe2+Fe3+2O4 |
4.BB.05 | Nichromite | (Ni,Co,Fe)(Cr,Fe,Al)2O4 |
4.BB.05 | Qandilite | (Mg,Fe3+)2(Ti,Fe3+,Al)O4 |
4.BB.05 | Spinel | MgAl2O4 |
4.BB.05 | Trevorite | Ni2+Fe3+2O4 |
4.BB.05 | Ulvöspinel | TiFe2+2O4 |
4.BB.05 | Vuorelainenite | Mn2+V3+2O4 |
4.BB.05 | Zincochromite | ZnCr2O4 |
4.BB.05 | Harmunite | CaFe2O4 |
4.BB.05 | Wernerkrauseite | Ca(Fe3+,Mn3+)2Mn4+O6 |
4.BB.05 | Deltalumite | (Al0.67◻0.33)Al2O4 |
4.BB.05 | Guite | Co2+Co3+2O4 |
4.BB.10 | Hausmannite | Mn2+Mn3+2O4 |
4.BB.10 | Hetaerolite | ZnMn2O4 |
4.BB.10 | Manganostibite | (Mn,Fe)7SbAsO12 |
4.BB.15 | Maghemite | (Fe3+0.67◻0.33)Fe3+2O4 |
4.BB.15 | Titanomaghemite | (Ti4+0.5◻0.5)Fe3+2O4 |
4.BB.20 | Tegengrenite | (Mn3+0.5Sb5+0.5)Mg2O4 |
4.BB.25 | Xieite | Fe2+Cr2O4 |
4.BB.30 | Carmeltazite | ZrAl2Ti4O11 |
4.BB.35 | Feiite | Fe2+2(Fe2+Ti4+)O5 |
4.BB.40 | Maohokite | MgFe2O4 |
4.BB.45 | Tschaunerite | (Fe2+)(Fe2+Ti4+)O4 |
Fluorescence of Garpenbergite
Not fluorescent.
Other Information
Magnetism:
Non-Magnetic
Notes:
Soluble in 30% HCl at room temperature.
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 Garpenbergite
mindat.org URL:
https://www.mindat.org/min-55440.html
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References for Garpenbergite
Reference List:
Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2021) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 61. European Journal of Mineralogy, 33 (3) 299-304 doi:10.5194/ejm-33-299-2021
forum.amiminerals.it (2021) https://forum.amiminerals.it/viewtopic.php?f=5&t=17061&sid=5ad478434dc6ca9acdb77950cdc4e144
Localities for Garpenbergite
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.
Sweden | |
| Miyawaki et al. (2021) |
| Holtstam et al. (2022) |
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Garpenberg Norra Mine, Garpenberg, Hedemora, Dalarna County, Sweden