Chukhrovite-(Nd)
A valid IMA mineral species
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About Chukhrovite-(Nd)
Russian mineralogist and geochemist Fedor Vasil’evich Chukhrov.
Formula:
Ca3(Nd,Y)Al2(SO4)F13 · 12H2O
Colour:
Clear to white
Lustre:
Vitreous
Hardness:
3½ - 4
Specific Gravity:
2.42
Crystal System:
Isometric
Member of:
Name:
Named in 2005 by L. A. Pautov, G. K. Bekenova, V. Yu. Karpenko and A. A. Agakhanov in honor of Fedor Vassil’evich Chukhrov (1908-1988) and for the Nd dominance in the composition.
Unique Identifiers
Mindat ID:
27474
Long-form identifier:
mindat:1:1:27474:4
GUID
(UUID V4):
(UUID V4):
75851db7-25c4-416b-bfd7-7ab3f3cbdae5
IMA Classification of Chukhrovite-(Nd)
Classification of Chukhrovite-(Nd)
3.CG.10
3 : HALIDES
C : Complex halides
G : Aluminofluorides with CO3, SO4, PO4
3 : HALIDES
C : Complex halides
G : Aluminofluorides with CO3, SO4, PO4
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Chk-Nd | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Chk | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Chukhrovite-(Nd)
Vitreous
Transparency:
Transparent, Translucent
Colour:
Clear to white
Streak:
White
Hardness:
3½ - 4 on Mohs scale
Hardness:
VHN30=177 - 213 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
on {111}
on {111}
Density:
2.42(3) g/cm3 (Measured) 2.421 g/cm3 (Calculated)
Optical Data of Chukhrovite-(Nd)
Type:
Isotropic
RI values:
nα = 1.443(2)
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Moderate
Chemistry of Chukhrovite-(Nd)
Mindat Formula:
Ca3(Nd,Y)Al2(SO4)F13 · 12H2O
Crystallography of Chukhrovite-(Nd)
Crystal System:
Isometric
Class (H-M):
m3 (2/m 3) - Diploidal
Space Group:
Fd3
Cell Parameters:
a = 16.759(3) Å
Unit Cell V:
4,707.00 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Poorly shaped combinations of cube and octahedron.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.7 Å | (10) |
| 5.92 Å | (7) |
| 4.20 Å | (4) |
| 3.22 Å | (8) |
| 2.555 Å | (7) |
| 2.240 Å | (5) |
| 2.180 Å | (6) |
| 1.827 Å | (5) |
Comments:
From type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 46 : Near-surface hydrothermal alteration of minerals (see also #22) | |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] | |
| 47g : [Halogen-bearing surface weathering minerals] |
Type Occurrence of Chukhrovite-(Nd)
Place of Conservation of Type Material:
Fersman Mineralogical Museum
Synonyms of Chukhrovite-(Nd)
Chukhrovite (in part)
Other Language Names for Chukhrovite-(Nd)
German:Chukhrovit-(Nd)
Russian:Чухровит-(Nd)
Relationship of Chukhrovite-(Nd) to other Species
Member of:
Other Members of this group:
| Chukhrovite-(Ca) | Ca4.5Al2(SO4)F13 · 12H2O | Iso. m3 (2/m 3) : Fd3 |
| Chukhrovite-(Ce) | Ca3(Ce,Y)(AlF6)2(SO4)F · 10H2O | Iso. |
| Chukhrovite-(Y) | Ca3(Y,Ce)(AlF6)2(SO4)F · 10H2O | Iso. m3 (2/m 3) : Fd3 |
| Meniaylovite | Ca4[(SO4)(SiF6)(AlF6)]F · 12H2O | Iso. m3 (2/m 3) : Fd3 |
Related Minerals - Strunz-mindat Grouping
| 3.CG.3.CG. | Chukhrovite-(Ca) | Ca4.5Al2(SO4)F13 · 12H2O |
| 3.CG.05 | Stenonite | (Sr,Ba,Na)2Al(CO3)F5 |
| 3.CG.10 | Chukhrovite-(Ce) | Ca3(Ce,Y)(AlF6)2(SO4)F · 10H2O |
| 3.CG.10 | Chukhrovite-(Y) | Ca3(Y,Ce)(AlF6)2(SO4)F · 10H2O |
| 3.CG.10 | Meniaylovite | Ca4[(SO4)(SiF6)(AlF6)]F · 12H2O |
| 3.CG.15 | Creedite | Ca3SO4Al2F8(OH)2 · 2H2O |
| 3.CG.20 | Bøggildite | Na2Sr2Al2PO4F9 |
| 3.CG.25 | Thermessaite-(NH4) | (NH4)2AlF3(SO4) |
| 3.CG.25 | Thermessaite | K2AlF3(SO4) |
| 3.CG.30 | Kruijenite | Ca4Al4(SO4)F2(OH)16 · 2H2O |
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 Chukhrovite-(Nd)
mindat.org URL:
https://www.mindat.org/min-27474.html
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References for Chukhrovite-(Nd)
Localities for Chukhrovite-(Nd)
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.
Kazakhstan (TL) | |
| Pautov et al. (2005) |
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Kara-Oba W deposit, Moiynkum District, Jambyl Region, Kazakhstan