Rhabdophane-(Nd)
A valid IMA mineral species - grandfathered
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About Rhabdophane-(Nd)
Formula:
Nd(PO4) · H2O
Nd is almost always replaced by major to minor La and Ce.
Colour:
Brown, pinkish, yellowish-white, colourless
Hardness:
3½
Crystal System:
Hexagonal
Member of:
Name:
Originally called simply rhabdophane, from the Greek, rhabdos, a rod, plus phainesthai, to appear, in allusion to the bands characteristically exhibited in its spectrum. In 1966 the suffix/modifier was added to differentiate it from cerium dominant rhabdophane. The modifier "-(Nd)" indicates the predominance of Nd over other REE in this species.
Unique Identifiers
Mindat ID:
3399
Long-form identifier:
mindat:1:1:3399:8
GUID
(UUID V4):
(UUID V4):
88667a94-50c0-4577-9c3e-a8f69ea20dbb
IMA Classification of Rhabdophane-(Nd)
Approved, 'Grandfathered' (first described prior to 1959)
IMA status notes:
Renamed by the IMA
First published:
1957
Classification of Rhabdophane-(Nd)
8.CJ.45
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
J : With only large cations
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
J : With only large cations
19.9.8
19 : Phosphates
9 : Phosphates of rare earths and Sc
19 : Phosphates
9 : Phosphates of rare earths and Sc
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 |
---|---|---|
Rha-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 Rhabdophane-(Nd)
Colour:
Brown, pinkish, yellowish-white, colourless
Hardness:
3½ on Mohs scale
Chemistry of Rhabdophane-(Nd)
Mindat Formula:
Nd(PO4) · H2O
Nd is almost always replaced by major to minor La and Ce.
Nd is almost always replaced by major to minor La and Ce.
Elements listed:
Crystallography of Rhabdophane-(Nd)
Crystal System:
Hexagonal
Class (H-M):
6 2 2 - Trapezohedral
Space Group:
P62 2 2
Cell Parameters:
a = 6.960 Å, c = 6.372 Å
Ratio:
a:c = 1 : 0.916
Unit Cell V:
267.32 ų (Calculated from Unit Cell)
Z:
3
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
6.07 Å | (m) |
4.40 Å | (s) |
3.49 Å | (m) |
3.02 Å | (vsb) |
2.83 Å | (s) |
2.15 Å | (s) |
1.859 Å | (m) |
Comments:
Sample from Salisbury, Connecticut, USA.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
34 : Complex granite pegmatites |
Type Occurrence of Rhabdophane-(Nd)
Place of Conservation of Type Material:
No designated type material.
Synonyms of Rhabdophane-(Nd)
Rhabdophane (in part)
Scovillite (in part)
Other Language Names for Rhabdophane-(Nd)
German:Rhabdophan-(Nd)
Russian:Рабдофан-(Nd)
Relationship of Rhabdophane-(Nd) to other Species
Member of:
Other Members of this group:
Brockite | (Ca,Th,Ce)PO4 · H2O | Hex. 6 2 2 : P62 2 2 |
Grayite | (Th,Pb,Ca)(PO4) · H2O | Hex. 6 2 2 : P62 2 2 |
Rhabdophane-(Ce) | Ce(PO4) · 0.6H2O | Trig. 3 2 : P31 2 1 |
Rhabdophane-(La) | La(PO4) · H2O | Hex. 6 2 2 : P62 2 2 |
Rhabdophane-(Y) | YPO4 · H2O | Hex. 6 2 2 : P62 2 2 |
Tristramite | (Ca,U,Fe)(PO4,SO4) · 2H2O | Hex. 6 2 2 : P62 2 2 |
UM1993-07-PO:CaCeHLa | (Ca,Ce,La,REE)PO4 · nH2O | Hex. 6 2 2 : P62 2 2 |
Common Associates
Associated Minerals Based on Photo Data:
8 photos of Rhabdophane-(Nd) associated with Churchite-(Y) | Y(PO4) · 2H2O |
7 photos of Rhabdophane-(Nd) associated with Rhabdophane-(La) | La(PO4) · H2O |
6 photos of Rhabdophane-(Nd) associated with Goethite | α-Fe3+O(OH) |
1 photo of Rhabdophane-(Nd) associated with Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
Related Minerals - Strunz-mindat Grouping
8.CJ. | Sainfeldite | Ca5(AsO4)2(AsO3OH)2 · 4H2O |
8.CJ. | Caesiumpharmacosiderite | CsFe4[(AsO4)3(OH)4] · 4H2O |
8.CJ. | Jeankempite | Ca5(AsO4)2(HAsO4)2 · 7H2O |
8.CJ. | Airdite | Sr(V4+O)2(PO4)2 · 4H2O |
8.CJ. | Dobšináite | Ca2Ca(AsO4)2 · 2H2O |
8.CJ.05 | Stercorite | (NH4)Na(PO3OH) · 4H2O |
8.CJ.10 | Mundrabillaite | (NH4)2Ca(PO3OH)2 · H2O |
8.CJ.10 | Swaknoite | (NH4)2Ca(PO3OH)2 · H2O |
8.CJ.15 | Nabaphite | NaBaPO4 · 9H2O |
8.CJ.15 | Nastrophite | Na(Sr,Ba)PO4 · 9H2O |
8.CJ.20 | Haidingerite | CaHAsO4 · H2O |
8.CJ.25 | Vladimirite | Ca4(AsO4)2(AsO3OH) · 4H2O |
8.CJ.25 | Rhabdophane-(Y) | YPO4 · H2O |
8.CJ.27 | Churchite-(Dy) | (Dy,Sm,Gd,Nd)PO4 · 2H2O |
8.CJ.30 | Ferrarisite | Ca5(AsO4)2(HAsO4)2 · 9H2O |
8.CJ.35 | Machatschkiite | (Ca,Na)6(AsO4)(HAsO4)3(PO4,SO4) · 15H2O |
8.CJ.35 | Fulbrightite | Ca(VO)2(AsO4)2 · 4H2O |
8.CJ.40 | Phaunouxite | Ca3(AsO4)2 · 11H2O |
8.CJ.40 | Rauenthalite | Ca3(AsO4)2 · 10H2O |
8.CJ.45 | Brockite | (Ca,Th,Ce)PO4 · H2O |
8.CJ.45 | Grayite | (Th,Pb,Ca)(PO4) · H2O |
8.CJ.45 | Rhabdophane-(Ce) | Ce(PO4) · 0.6H2O |
8.CJ.45 | Rhabdophane-(La) | La(PO4) · H2O |
8.CJ.45 | Tristramite | (Ca,U,Fe)(PO4,SO4) · 2H2O |
8.CJ.45 | Smirnovskite | (Th,Ca)PO4 · nH2O |
8.CJ.45 | Štěpite | U(AsO3OH)2 · 4H2O |
8.CJ.47 | Vysokýite | U4+[AsO2(OH)2]4 · 4H2O |
8.CJ.50 | Ardealite | Ca2(PO3OH)(SO4) · 4H2O |
8.CJ.50 | Brushite | Ca(PO3OH) · 2H2O |
8.CJ.50 | Churchite-(Y) | Y(PO4) · 2H2O |
8.CJ.50 | Pharmacolite | Ca(HAsO4) · 2H2O |
8.CJ.50 | Churchite-(Nd) | Nd(PO4) · 2H2O |
8.CJ.55 | Mcnearite | NaCa5(AsO4)(HAsO4)4 · 4H2O |
8.CJ.60 | Dorfmanite | Na2(PO3OH) · 2H2O |
8.CJ.65 | Sincosite | Ca(VO)2(PO4)2 · 5H2O |
8.CJ.65 | Bariosincosite | Ba(VO)2(PO4)2 · 4H2O |
8.CJ.70 | Catalanoite | Na2(PO3OH) · 8H2O |
8.CJ.75 | Guérinite | Ca6(HAsO4)3(AsO4)2 · 10.5H2O |
8.CJ.85 | Ningyoite | (U,Ca,Ce)2(PO4)2 · 1-2H2O |
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 Rhabdophane-(Nd)
mindat.org URL:
https://www.mindat.org/min-3399.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Rhabdophane-(Nd)
Localities for Rhabdophane-(Nd)
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.
Angola | |
| Beleque (2010) |
Czech Republic | |
| Scharm +7 other references |
Germany | |
| Wittern (1995) |
| Walenta (1992) +1 other reference |
| Lorenz et al. (2007) |
| Belendorff (2009) |
Italy | |
| Bracco et al. (2012) |
Japan | |
| Minakawa (1988) |
| 皆川鉄雄 et al. (2001) |
| TAKAI et al. (2012) |
Madagascar | |
| Wolfgang Hampel (2011) |
Poland | |
| Pieczka et al. (2023) |
Pieczka et al. (2023) | |
Russia | |
| ... |
| Chukanov et al. (2005) |
UK | |
| Rudler (1905) |
| Mineralogical Magazine 48 (1984) +1 other reference |
USA (TL) | |
| Brush (1883) |
| Hanson et al. (1999) |
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Cornwall, England, UK