Chinleite-(Nd)
A valid IMA mineral species
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About Chinleite-(Nd)
Formula:
NaNd(SO4)2 · H2O
Colour:
colorless
Lustre:
Vitreous
Hardness:
2½ - 3
Specific Gravity:
3.436 (Calculated)
Crystal System:
Trigonal
Name:
Named for being the Nd analogue of chinleite-(Y). The root name is for the Chinle Formation, an Upper Triassic continental geological formation in the US southwest.
Unique Identifiers
Mindat ID:
470381
Long-form identifier:
mindat:1:1:470381:1
GUID
(UUID V4):
(UUID V4):
8507cc5e-8877-484b-9698-76cb4870e131
IMA Classification of Chinleite-(Nd)
Approved
Approval year:
2022
First published:
2023
Classification of Chinleite-(Nd)
7.CD.45
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
D : With only large cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
D : With only large 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 |
|---|---|---|
| Chi-Nd | 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 Chinleite-(Nd)
Vitreous
Transparency:
Transparent
Colour:
colorless
Streak:
white
Hardness:
2½ - 3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
at least one good cleavage parallel to [001], probably {100}
at least one good cleavage parallel to [001], probably {100}
Fracture:
Splintery
Density:
3.436 g/cm3 (Calculated)
Optical Data of Chinleite-(Nd)
Type:
Uniaxial (+)
RI values:
nω = 1.566(2) nε = 1.604(2)
Max Birefringence:
δ = 0.038
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
Chemistry of Chinleite-(Nd)
Mindat Formula:
NaNd(SO4)2 · H2O
Crystallography of Chinleite-(Nd)
Crystal System:
Trigonal
Class (H-M):
3 2 - Trapezohedral
Space Group:
P32 2 1
Setting:
P32 2 1
Cell Parameters:
a = 6.9540(7) Å, c = 12.8590(9) Å
Ratio:
a:c = 1 : 1.849
Unit Cell V:
538.53 ų (Calculated from Unit Cell)
Z:
3
Twinning:
Merohedral twinning is indicated by the structure refinement.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.02 Å | (50) |
| 5.46 Å | (70) |
| 3.479 Å | (44) |
| 3.014 Å | (84) |
| 2.837 Å | (100) |
| 2.148 Å | (38) |
| 1.859 Å | (55) |
| 1.706 Å | (27) |
Type Occurrence of Chinleite-(Nd)
General Appearance of Type Material:
Prisms are up to about 0.3 mm in length and 0.1 mm in diameter
Place of Conservation of Type Material:
Cotype material is deposited in the collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 76253 and 76254
Geological Setting of Type Material:
secondary mineral assemblage occurring on asphaltite
Associated Minerals at Type Locality:
Synonyms of Chinleite-(Nd)
Related Minerals - Strunz-mindat Grouping
| 7.CD. | Argesite | (NH4)7Bi3Cl16 |
| 7.CD. | Campostriniite | (Bi3+,Na)3(NH4,K)2Na2(SO4)6 · H2O |
| 7.CD.05 | Matteuccite | NaHSO4 · H2O |
| 7.CD.10 | Mirabilite | Na2SO4 · 10H2O |
| 7.CD.15 | Lecontite | (NH4,K)NaSO4 · 2H2O |
| 7.CD.20 | Hydroglauberite | Na10Ca3(SO4)8 · 6H2O |
| 7.CD.25 | Eugsterite | Na4Ca(SO4)3 · 2H2O |
| 7.CD.30 | Görgeyite | K2Ca5(SO4)6 · H2O |
| 7.CD.35 | Koktaite | (NH4)2Ca(SO4)2 · H2O |
| 7.CD.35 | Syngenite | K2Ca(SO4)2 · H2O |
| 7.CD.35 | Antofagastaite | Na2Ca(SO4)2 · 1.5H2O |
| 7.CD.40 | Gypsum | CaSO4 · 2H2O |
| 7.CD.45 | Bassanite | Ca(SO4) · 0.5H2O |
| 7.CD.45 | Chinleite-(Y) | NaY(SO4)2 · H2O |
| 7.CD.50 | Zircosulfate | (Zr,Ti)(SO4)2 · 4H2O |
| 7.CD.55 | Schieffelinite | Pb10Te6+6O20(OH)14(SO4)(H2O)5 |
| 7.CD.60 | Montanite | Bi2(TeO6) · nH2O |
| 7.CD.65 | Omongwaite | Na2Ca5(SO4)6 · 3H2O |
Fluorescence of Chinleite-(Nd)
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 Chinleite-(Nd)
mindat.org URL:
https://www.mindat.org/min-470381.html
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Please feel free to link to this page.
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References for Chinleite-(Nd)
Localities for Chinleite-(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.
USA | |
| Desor (05/2022) |
| Miyawaki et al. (2022) +1 other reference |
Blue Lizard Mine, Red Canyon Mining District, San Juan County, Utah, USA