Giftgrubeite
A valid IMA mineral species
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About Giftgrubeite
Formula:
CaMn2Ca2(AsO4)2(AsO3OH)2 · 4H2O
Colour:
colorless, rarely pearl white to pale yellow
Lustre:
Vitreous
Hardness:
3½
Specific Gravity:
3.23
Crystal System:
Monoclinic
Member of:
Name:
Named for the Giftgrube mine, France, the type locality.
Unique Identifiers
Mindat ID:
51573
Long-form identifier:
mindat:1:1:51573:9
GUID
(UUID V4):
(UUID V4):
f2580be9-3062-4f46-891d-d2edf086b111
IMA Classification of Giftgrubeite
Approved
Approval year:
2016
First published:
2019
Classification of Giftgrubeite
8.CB.10
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
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 |
|---|---|---|
| Gif | 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 Giftgrubeite
Vitreous
Transparency:
Transparent
Colour:
colorless, rarely pearl white to pale yellow
Streak:
white
Hardness:
3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Sub-Conchoidal
Density:
3.23(2) g/cm3 (Measured) 3.24 g/cm3 (Calculated)
Optical Data of Giftgrubeite
Type:
Biaxial (-)
RI values:
nα = 1.630(2) nβ = 1.640(2) nγ = 1.646(2)
2V:
Measured: 72° , Calculated: 75.1°
Max Birefringence:
δ = 0.016
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:
Moderate
Pleochroism:
Non-pleochroic
Chemistry of Giftgrubeite
Mindat Formula:
CaMn2Ca2(AsO4)2(AsO3OH)2 · 4H2O
Crystallography of Giftgrubeite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 18.495(7) Å, b = 9.475(4) Å, c = 9.986(4) Å
β = 96.79(3)°
β = 96.79(3)°
Ratio:
a:b:c = 1.952 : 1 : 1.054
Unit Cell V:
1,737.67 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Rosettes
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.54 Å | (40) |
| 4.80 Å | (50) |
| 4.65 Å | (50) |
| 3.33 Å | (100) |
| 3.18 Å | (80) |
| 3.05 Å | (50) |
| 2.488 Å | (50) |
| 2.414 Å | (60) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 55 : Anthropogenic mine minerals |
Type Occurrence of Giftgrubeite
General Appearance of Type Material:
Rosette-like aggregates up to 0.2 mm across
Place of Conservation of Type Material:
In the mineralogical collections of the Musée Cantonal de Géologie, University of Lausanne, Anthropole, Dorigny, CH-1015 Lausanne, Switzerland, cataloguenumber MGL 080133 (holotype) and 080134 (cotype)
Geological Setting of Type Material:
A supergene mineral, formed by alteration of the As-bearing hypogene minerals and its formation is connected with the post-mining alteration.
processes.
Associated Minerals at Type Locality:
Reference:
Meisser, N., Plasil, J., Brunsperger, T., Lheur, C., Skoda, R. (2019) Giftgrubeite, CaMn2Ca2(AsO4)2(AsO3OH)2·4H2O, a new member of the hureaulite group from Sainte-Marie-aux-Mines, Haut-Rhin Department, Vosges, France. Journal of Geosciences: 64(1): 73-80.
Synonyms of Giftgrubeite
Relationship of Giftgrubeite to other Species
Member of:
Other Members of this group:
| Chongite | Ca3Mg2(AsO4)2(AsO3OH)2 · 4H2O | Mon. 2/m : B2/b |
| Hureaulite | Mn2+5(PO3OH)2(PO4)2 · 4H2O | Mon. 2/m : B2/b |
| Miguelromeroite | MnMn2Mn2(AsO4)2(HAsO4)2 · 4H2O | Mon. 2/m : B2/b |
| Nyholmite | Cd3Zn2(AsO4)2(HAsO4)2 · 4H2O | Mon. 2/m : B2/b |
| Sainfeldite | Ca5(AsO4)2(AsO3OH)2 · 4H2O | Mon. 2/m : B2/b |
| Villyaellenite | MnMn2Ca2(AsO4)2(HAsO4)2 · 4H2O | Mon. 2/m : B2/b |
Common Associates
Associated Minerals Based on Photo Data:
| 2 photos of Giftgrubeite associated with Calcite | CaCO3 |
| 1 photo of Giftgrubeite associated with Picropharmacolite | Ca4Mg(AsO4)2(HAsO4)2 · 11H2O |
| 1 photo of Giftgrubeite associated with Pharmacolite | Ca(HAsO4) · 2H2O |
Related Minerals - Strunz-mindat Grouping
| 8.CB. | Krupičkaite | Cu6[AsO3(OH)]6 · 8H2O |
| 8.CB. | Ermeloite | Al(PO4) · H2O |
| 8.CB.05 | Serrabrancaite | MnPO4 · H2O |
| 8.CB.10 | Hureaulite | Mn2+5(PO3OH)2(PO4)2 · 4H2O |
| 8.CB.10 | Villyaellenite | MnMn2Ca2(AsO4)2(HAsO4)2 · 4H2O |
| 8.CB.10 | UM1997-09-AsO:CaHMgZn | (Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2O |
| 8.CB.10 | Nyholmite | Cd3Zn2(AsO4)2(HAsO4)2 · 4H2O |
| 8.CB.10 | Miguelromeroite | MnMn2Mn2(AsO4)2(HAsO4)2 · 4H2O |
| 8.CB.15 | Krautite | Mn(HAsO4) · H2O |
| 8.CB.20 | Cobaltkoritnigite | Co(AsO3OH) · H2O |
| 8.CB.20 | Koritnigite | Zn(AsO3OH) · H2O |
| 8.CB.20 | Magnesiokoritnigite | Mg(AsO3OH) · H2O |
| 8.CB.25 | Yvonite | Cu(HAsO4) · 2H2O |
| 8.CB.30 | Geminite | Cu2+(AsO3OH) · H2O |
| 8.CB.35 | Schubnelite | Fe3+VO4 · H2O |
| 8.CB.40 | Radovanite | Cu2Fe3+(AsO4)(HAs3+O3)2 · H2O |
| 8.CB.45 | Kazakhstanite | Fe3+5V4+3V5+12O39(OH)9 · 9H2O |
| 8.CB.50 | Kolovratite | NixZny(VO4)0.67(x+y) · nH2O |
| 8.CB.60 | Burgessite | Co2(H2O)4[AsO3(OH)]2(H2O) |
| 8.CB.60 | Honzaite | Ni2(AsO3OH)2 · 5H2O |
| 8.CB.65 | Cardite | Zn5.5(AsO4)2(AsO3OH)(OH)3 · 3H2O |
Fluorescence of Giftgrubeite
None
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 Giftgrubeite
mindat.org URL:
https://www.mindat.org/min-51573.html
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References for Giftgrubeite
Localities for Giftgrubeite
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.
Czech Republic | |
| Jakub Plasil |
France | |
| Georges Favreau collection |
| Hålenius et al. (2017) +1 other reference |
| This mine worked the same vein as Gabe ... +2 other references |
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Giftgrube mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France