Peisleyite
A valid IMA mineral species
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About Peisleyite
Formula:
Na2Al9[(P,S)O4]8(OH)6 · 28H2O
Colour:
White
Lustre:
Dull
Hardness:
3
Specific Gravity:
2.20
Crystal System:
Triclinic
Name:
Named by E. S. Pilkington, E. R. Segnit, and J. A. Watts in 1982 in honor of Vincent Peisley (b. 1941, died 6 May 2021), mineral collector from Brahma Lodge, Australia who collected the first specimens. It is pronounced peez'-lee-ite.
This page provides mineralogical data about Peisleyite.
Unique Identifiers
Mindat ID:
3143
Long-form identifier:
mindat:1:1:3143:7
GUID
(UUID V4):
(UUID V4):
9660806a-6336-4c17-9896-6d03073d2047
IMA Classification of Peisleyite
Approved
IMA Formula:
Na3Al16(PO4)10(SO4)2(OH)17 · 20H2O
Approval year:
1981
First published:
1982
Classification of Peisleyite
8.DO.15
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
O : With CO3, SO4, SiO4
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
O : With CO3, SO4, SiO4
43.5.15.1
43 : COMPOUND PHOSPHATES, ETC.
5 : Hydrated Compound Phosphates, etc·, Containing Hydroxyl or Halogen
43 : COMPOUND PHOSPHATES, ETC.
5 : Hydrated Compound Phosphates, etc·, Containing Hydroxyl or Halogen
22.3.5
22 : Phosphates, Arsenates or Vanadates with other Anions
3 : Phosphates, arsenates or vanadates with sulphates
22 : Phosphates, Arsenates or Vanadates with other Anions
3 : Phosphates, arsenates or vanadates with sulphates
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 |
---|---|---|
Pei | 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 Peisleyite
Dull
Colour:
White
Streak:
White
Hardness:
3 on Mohs scale
Density:
2.20 g/cm3 (Measured) 2.23 g/cm3 (Calculated)
Optical Data of Peisleyite
Type:
Biaxial
Dispersion:
none
Comments:
average RI ~1.510
Chemistry of Peisleyite
Mindat Formula:
Na2Al9[(P,S)O4]8(OH)6 · 28H2O
Crystallography of Peisleyite
Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 9.280(19) Å, b = 11.976(19) Å, c = 13.250(18) Å
α = 91.3(1)°, β = 75.6(1)°, γ = 67.67(1)°
α = 91.3(1)°, β = 75.6(1)°, γ = 67.67(1)°
Ratio:
a:b:c = 0.775 : 1 : 1.106
Unit Cell V:
1,308.02 ų (Calculated from Unit Cell)
Z:
4
Morphology:
very small flakes about 2 μm in diameter
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
12.63 Å | (100) |
7.82 Å | (35) |
5.41 Å | (35) |
7.59 Å | (30) |
4.35 Å | (20) |
10.85 Å | (15) |
6.43 Å | (15) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
31 : Thermally altered carbonate, phosphate, and iron formations | |
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Peisleyite
General Appearance of Type Material:
White earthy material.
Place of Conservation of Type Material:
National Museum of Victoria (Cat. No. M35630).
Geological Setting of Type Material:
Phosphatic limestone beds.
Associated Minerals at Type Locality:
Reference:
Pilkington, E.S., Segnit, E.R., Watts, J.A. (1982) Peisleyite, a new sodium aluminium sulphate phosphate. Mineralogical Magazine: 46(341): 449-452.
Synonyms of Peisleyite
Other Language Names for Peisleyite
German:Peisleyit
Spanish:Peisleyita
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Peisleyite associated with Fluorwavellite | Al3(PO4)2(OH)2F · 5H2O |
Related Minerals - Strunz-mindat Grouping
8.DO. | Whiterockite | CaMgMn3+3O2(PO4)2(CO3)F · 5H2O |
8.DO.05 | Girvasite | NaCa2Mg3(PO4)3(CO3)(H2O)6 |
8.DO.10 | Voggite | Na2Zr(PO4)(CO3)(OH) · 2H2O |
8.DO.20 | Perhamite | Ca3Al7.7Si3P4O23.5(OH)14.1 · 8H2O |
8.DO.20 | Krásnoite | Ca3Al7.7Si3P4O23.5(OH)12.1F2 · 8H2O |
8.DO.25 | Saryarkite-(Y) | Ca(Y,Th)Al5(SiO4)2(PO4,SO4)2(OH)7 · 6H2O |
8.DO.30 | Micheelsenite | (Ca2Y)Al(PO3OH)(CO3)(OH)6 · 12H2O |
8.DO.40 | Parwanite | (Na,K)(Mg,Ca)4Al8(PO4)8(CO3)(OH)7 · 30H2O |
8.DO.45 | Skorpionite | Ca3Zn2(PO4)2(CO3)(OH)2 · H2O |
8.DO.50 | Jörgkellerite | (Na,◻)3Mn3+3(PO4)2(CO3)(O,OH)2 · 5H2O |
8.DO.55 | Juansilvaite | Na5Al3[AsO3(OH)]4[AsO2(OH)2]2(SO4)2 · 4H2O |
8.DO.60 | Vanderheydenite | Zn6(PO4)2(SO4)(OH)4 · 7H2O |
Other Information
Notes:
Soluble in mineral acids.
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 Peisleyite
mindat.org URL:
https://www.mindat.org/min-3143.html
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References for Peisleyite
Localities for Peisleyite
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.
Australia (TL) | |
| Pilkington et al. (1982) |
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Tom's Quarry, Kapunda, North Mt Lofty Ranges, Mt Lofty Ranges, South Australia, Australia