Písekite-(Y)
A material that is NOT an approved mineral species
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About Písekite-(Y)
Formula:
(Y,As,Ca,Fe,U)(Nb,Ti,Ta)O4
Colour:
Yellowish brown to black
Lustre:
Vitreous, Resinous
Hardness:
5½ - 6
Specific Gravity:
4.032
Name:
After the locality of Pisek, Bohemia, Czech Republic.
A synonym for "Monazite-(Y)" (not a valid species) from Písek, Czech Republic. Possibly considered a valid species by some with formula (Y,As,Ca,Fe,U)(Nb,Ti,Ta)O4.
Unique Identifiers
Mindat ID:
29146
Long-form identifier:
mindat:1:1:29146:8
GUID
(UUID V4):
(UUID V4):
1faa096f-1c83-400c-9d07-61a9d15fa28e
IMA Classification of Písekite-(Y)
'Grandfathered' (first described prior to 1959), Questionable
Classification of Písekite-(Y)
4.00.
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
0 :
0 :
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
0 :
0 :
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 |
|---|---|---|
| Pís-Y | 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 Písekite-(Y)
Vitreous, Resinous
Colour:
Yellowish brown to black
Streak:
Gray
Hardness:
5½ - 6 on Mohs scale
Fracture:
Conchoidal
Density:
4.032 g/cm3 (Measured)
Chemistry of Písekite-(Y)
Mindat Formula:
(Y,As,Ca,Fe,U)(Nb,Ti,Ta)O4
Crystallography of Písekite-(Y)
Morphology:
Crystals elongated [010] and flattened {100}.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Related Minerals - Strunz-mindat Grouping
| 4.00. | Goethite | α-Fe3+O(OH) |
| 4.00. | Microlite Group | A2-mTa2X6-wZ-n |
| 4.00. | Ferrotaaffeite-6N'3S | (Be,Zn,Mg)FeAl4O8 |
| 4.00. | Pyrochlore Group | A2Nb2(O,OH)6Z |
| 4.00. | UM2004-19-O:AlCeGdZr | (Gd,Ce)4Al2Zr4O17 |
| 4.00. | UM2004-21-O:CaFeGdZr | Ca2Gd4Fe5ZrO15 |
| 4.00. | UM2004-27-O:GdTi | Gd2Ti4O11 |
| 4.00. | Mapiquiroite | (Sr,Pb)(U,Y)Fe2(Ti,Fe3+,Cr3+)18O38 |
| 4.00. | Almeidaite | PbZn2(Mn,Y)(Ti,Fe3+)18O37(OH,O) |
| 4.00. | Vapnikite | Ca2CaUO6 |
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 Písekite-(Y)
mindat.org URL:
https://www.mindat.org/min-29146.html
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References for Písekite-(Y)
Reference List:
Localities for Písekite-(Y)
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 | |
| Historic mineral collection National ... +1 other reference |
U obrázku quarry, Písek District, South Bohemian Region, Czech Republic