Unnamed (Nd-dominant Gasparite)
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About Unnamed (Nd-dominant Gasparite)
Formula:
Nd(AsO4)
Crystal System:
Monoclinic
Member of:
First Recorded Locality:
Dimorph of:
Tiny Nd-dominant grain in material also containing gasparite-(Ce) and gasparite-(La).
Occurs in a metamorphosed manganese deposit in Italy (Cabella et al., 1999).
Further occurrences in similar occurrences in Austria were reported by Kolitsch et al. (2021, 2025).
Occurs in a metamorphosed manganese deposit in Italy (Cabella et al., 1999).
Further occurrences in similar occurrences in Austria were reported by Kolitsch et al. (2021, 2025).
Unique Identifiers
Mindat ID:
55272
Long-form identifier:
mindat:1:1:55272:1
Chemistry of Unnamed (Nd-dominant Gasparite)
Mindat Formula:
Nd(AsO4)
Element Weights:
Elements listed:
Crystallography of Unnamed (Nd-dominant Gasparite)
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 6.6852(3) Å, b = 7.0885(5) Å, c = 6.8935(4) Å
β = 104.91(1)°
β = 104.91(1)°
Ratio:
a:b:c = 0.943 : 1 : 0.972
Unit Cell V:
315.67 ų (Calculated from Unit Cell)
Z:
4
Comment:
Space group P21/n. Data for synthetic material (Schmidt et al., 2005).
First Recorded Occurrence of Unnamed (Nd-dominant Gasparite)
Synonyms of Unnamed (Nd-dominant Gasparite)
Gasparite (in part)
Relationship of Unnamed (Nd-dominant Gasparite) to other Species
Member of:
Other Members of Gasparite Group:
| Gasparite-(Ce) | Ce(AsO4) | Mon. 2/m |
| Gasparite-(La) | La(AsO4) | Mon. 2/m |
Common Associates
Associations Based on Photo Data:
| 2 photos of Unnamed (Nd-dominant Gasparite) associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
| 2 photos of Unnamed (Nd-dominant Gasparite) associated with Quartz | SiO2 |
| 1 photo of Unnamed (Nd-dominant Gasparite) associated with Ardennite-(As) | Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6 |
| 1 photo of Unnamed (Nd-dominant Gasparite) associated with Gasparite-(Ce) | Ce(AsO4) |
| 1 photo of Unnamed (Nd-dominant Gasparite) associated with Piemontite | (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) |
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 Unnamed (Nd-dominant Gasparite)
mindat.org URL:
https://www.mindat.org/min-55272.html
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References for Unnamed (Nd-dominant Gasparite)
Reference List:
Schwarz, H. (1963) Über die Chromate(V) der Seltenen Erden. III Neodymchromat(V), NdCrO4 [On the rare earth chromates. III. Neodymium chromate(V), NdCrO4]. Zeitschrift für anorganische und allgemeine Chemie, 322 (3). 129-136 doi:10.1002/zaac.19633220303[with info on NdAsO4]
Botto, I.L, Baran, E.J (1982) Characterization of the monoclinic rare earth orthoarsenates. Journal of the Less Common Metals, 83 (2). 255-261 doi:10.1016/0022-5088(82)90275-2
Kolitsch, Uwe; Holtstam, Dan (2004) Crystal chemistry of REEXO4 compounds (X = P, As, V). II. Review of REEXO4 compounds and their stability fields. European Journal of Mineralogy, 16 (1). 117-126 doi:10.1127/0935-1221/2004/0016-0117
Schmidt, Marcus, Müller, Ulf, Cardoso Gil, Raul, Milke, Edgar, Binnewies, Michael (2005) Zum chemischen Transport und zur Kristallstruktur von Seltenerdarsenaten(V) [Chemical vapour transport and crystal structure of rare-earth arsenates(V)]. Zeitschrift für anorganische und allgemeine Chemie, 631 (6). 1154-1162 doi:10.1002/zaac.200400544
Localities for Unnamed (Nd-dominant Gasparite)
Showing 4 localities.
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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.
Austria | |
| Kolitsch et al. (2021) |
| Kolitsch et al. (2025) | |
Italy (FRL) | |
| Cabella et al. (1999) |
Russia | |
| Specimen auctioned by Carsten Slotta |
Lagler, Tweng, Tamsweg District, Salzburg, Austria