Hydroxylpyromorphite
A valid IMA mineral species
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About Hydroxylpyromorphite
Formula:
Pb5(PO4)3(OH)
Colour:
Colorless
Lustre:
Vitreous
Hardness:
3½ - 4
Specific Gravity:
7.32 (Calculated)
Crystal System:
Hexagonal
Member of:
Name:
For being the OH analogue of pyromorphite.
Apatite Supergroup.
First reported as an unnamed mineral, then approved in 2017.
The hydroxyl analogue of pyromorphite and fluorpyromorphite.
The phosphate analogue of Unnamed (OH-analogue of Mimetite).
Known as a synthetic compound.
First reported as an unnamed mineral, then approved in 2017.
The hydroxyl analogue of pyromorphite and fluorpyromorphite.
The phosphate analogue of Unnamed (OH-analogue of Mimetite).
Known as a synthetic compound.
Unique Identifiers
Mindat ID:
31566
Long-form identifier:
mindat:1:1:31566:1
GUID
(UUID V4):
(UUID V4):
9d3ba30f-c9fe-4afd-a47c-0701b9469ab3
IMA Classification of Hydroxylpyromorphite
Approved
Approval year:
2017
First published:
2021
Classification of Hydroxylpyromorphite
8.BN.05
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
N : With only large cations, (OH, etc.):RO4 = 0.33:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
N : With only large cations, (OH, etc.):RO4 = 0.33:1
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 |
|---|---|---|
| Hpm | 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 Hydroxylpyromorphite
Vitreous
Transparency:
Translucent
Colour:
Colorless
Streak:
White
Hardness:
3½ - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
indistinct cleavage was observed on {001}
indistinct cleavage was observed on {001}
Fracture:
Irregular/Uneven
Density:
7.32 g/cm3 (Calculated)
Optical Data of Hydroxylpyromorphite
Type:
Uniaxial (-)
Comments:
The predicted average index of refraction based upon the
Gladstone-Dale relationship is 2.04
Gladstone-Dale relationship is 2.04
Chemistry of Hydroxylpyromorphite
Mindat Formula:
Pb5(PO4)3(OH)
Elements listed:
Crystallography of Hydroxylpyromorphite
Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mcm
Setting:
P63/m 2/c 2/m
Cell Parameters:
a = 9.787(1) Å, c = 7.307(1) Å
Ratio:
a:c = 1 : 0.747
Unit Cell V:
606.13 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Elongated prismatic, showing the {100} prism terminated by the {101} pyramid.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.079 Å | (18) |
| 3.359 Å | (29) |
| 3.207 Å | (21) |
| 2.934 Å | (100) |
| 2.035 Å | (21) |
| 1.942 Å | (27) |
| 1.834 Å | (25) |
| 1.592 Å | (17) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Hydroxylpyromorphite
General Appearance of Type Material:
Occurs as aggregates of randomly oriented hexagonal prisms, primarily between about 20–35 μm in length and 6–10 μm in diameter.
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles,CA90007, USA, catalogue number 66627.
Geological Setting of Type Material:
In a formation comprised primarily of metagraywacke and conglomeratic, ferruginous quartzite.
Associated Minerals at Type Locality:
Reference:
Olds, T. A., Kampf, A. R., Rakovan, J. F., Burns, P. C., Mills, O. P., & Laughlin-Yurs, C. (2021). Hydroxylpyromorphite, a mineral important to lead remediation: Modern description and characterization. American Mineralogist: Journal of Earth and Planetary Materials, 106(6), 922-929.
Synonyms of Hydroxylpyromorphite
Relationship of Hydroxylpyromorphite to other Species
Member of:
Other Members of this group:
| Alforsite | Ba5(PO4)3Cl | Hex. 6/m : P63/m |
| Apatite | Ca5(PO4)3(Cl/F/OH) | |
| Chlorapatite | Ca5(PO4)3Cl | Hex. 6/m : P63/m |
| Fluoralforsite | Ba5(PO4)3F | Hex. 6/m : P6/m |
| Fluorapatite | Ca5(PO4)3F | Hex. 6/m : P63/m |
| Fluorpyromorphite | Pb5(PO4)3F | Hex. 6/m : P63/m |
| Hydroxylapatite | Ca5(PO4)3(OH) | Hex. 6/m : P63/m |
| Johnbaumite | Ca5(AsO4)3(OH) | Hex. 6/m : P63/m |
| Mimetite | Pb5(AsO4)3Cl | Hex. 6/m : P63/m |
| Oxypyromorphite | Pb10(PO4)6O | |
| Pieczkaite | Mn5(PO4)3Cl | Hex. 6/m : P63/m |
| Pliniusite | Ca5(VO4)3F | Hex. 6/m : P63/m |
| Pyromorphite | Pb5(PO4)3Cl | Hex. 6/m : P63/m |
| Stronadelphite | Sr5(PO4)3F | Hex. 6/m : P63/m |
| Svabite | Ca5(AsO4)3F | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| Turneaureite | Ca5(AsO4)3Cl | Hex. 6/m : P63/m |
| Unnamed (OH-analogue of Mimetite) | Pb5(AsO4)3(OH) | Hex. 6/m : P63/m |
| Vanadinite | Pb5(VO4)3Cl | Hex. 6/m : P63/m |
Common Associates
Associated Minerals Based on Photo Data:
| 3 photos of Hydroxylpyromorphite associated with Quartz | SiO2 |
| 1 photo of Hydroxylpyromorphite associated with Senarmontite | Sb2O3 |
| 1 photo of Hydroxylpyromorphite associated with Mimetite | Pb5(AsO4)3Cl |
| 1 photo of Hydroxylpyromorphite associated with Feinglosite | Pb2Zn(AsO4)2 · H2O |
Related Minerals - Strunz-mindat Grouping
| 8.BN. | Aradite | BaCa6[(SiO4)(VO4)](VO4)2F |
| 8.BN. | Magganasite | CuFe3+3O(AsO4)3 |
| 8.BN. | Fluorpyromorphite | Pb5(PO4)3F |
| 8.BN. | Fluorsigaiite | Ca2Sr3(PO4)3F |
| 8.BN. | Fluoralforsite | Ba5(PO4)3F |
| 8.BN.05 | Alforsite | Ba5(PO4)3Cl |
| 8.BN.05 | Belovite-(Ce) | NaCeSr3(PO4)3F |
| 8.BN.05 | Chlorapatite | Ca5(PO4)3Cl |
| 8.BN.05 | Mimetite-M | Pb5(AsO4)3Cl |
| 8.BN.05 | Johnbaumite-M | Ca5(AsO4)3OH |
| 8.BN.05 | Fluorapatite | Ca5(PO4)3F |
| 8.BN.05 | Hedyphane | Ca2Pb3(AsO4)3Cl |
| 8.BN.05 | Hydroxylapatite | Ca5(PO4)3(OH) |
| 8.BN.05 | Johnbaumite | Ca5(AsO4)3(OH) |
| 8.BN.05 | Mimetite | Pb5(AsO4)3Cl |
| 8.BN.05 | Morelandite | Ca2Ba3(AsO4)3Cl |
| 8.BN.05 | Oxypyromorphite | Pb10(PO4)6O |
| 8.BN.05 | Pyromorphite | Pb5(PO4)3Cl |
| 8.BN.05 | Fluorstrophite | SrCaSr3(PO4)3F |
| 8.BN.05 | Svabite | Ca5(AsO4)3F |
| 8.BN.05 | Turneaureite | Ca5(AsO4)3Cl |
| 8.BN.05 | Vanadinite | Pb5(VO4)3Cl |
| 8.BN.05 | Belovite-(La) | NaLaSr3(PO4)3F |
| 8.BN.05 | Deloneite | (Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5 |
| 8.BN.05 | Fluorcaphite | SrCaCa3(PO4)3F |
| 8.BN.05 va | Germanate-pyromorphite | Pb5(PO4)2GeO4 |
| 8.BN.05 | Kuannersuite-(Ce) | NaCeBa3(PO4)3F0.5Cl0.5 |
| 8.BN.05 | Hydroxylapatite-M | Ca5(PO4)3OH |
| 8.BN.05 | Phosphohedyphane | Ca2Pb3(PO4)3Cl |
| 8.BN.05 | Stronadelphite | Sr5(PO4)3F |
| 8.BN.05 | Fluorphosphohedyphane | Ca2Pb3(PO4)3F |
| 8.BN.05 | Carlgieseckeite-(Nd) | NaNdCa3(PO4)3F |
| 8.BN.05 | Vanackerite | Pb4Cd(AsO4)3Cl |
| 8.BN.05 | Miyahisaite | (Sr,Ca)2Ba3(PO4)3F |
| 8.BN.05 | Unnamed (OH-analogue of Mimetite) | Pb5(AsO4)3(OH) |
| 8.BN.05 | Pieczkaite | Mn5(PO4)3Cl |
| 8.BN.05 | Hydroxylhedyphane | Ca2Pb3(AsO4)3(OH) |
| 8.BN.05 | Pliniusite | Ca5(VO4)3F |
| 8.BN.05 | Parafiniukite | Ca2Mn3(PO4)3Cl |
| 8.BN.10 | Arctite | Na2Ca4(PO4)3F |
| 8.BN.15 | Goryainovite | Ca2(PO4)Cl |
Fluorescence of Hydroxylpyromorphite
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 Hydroxylpyromorphite
mindat.org URL:
https://www.mindat.org/min-31566.html
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References for Hydroxylpyromorphite
Reference List:
Engel, G. (1970) Hydrothermalsynthese von Bleihydroxylapatiten Pb5(XO4)3OH mit X = P, As, V. Die Naturwissenschaften, 57 (7) 355 doi:10.1007/bf01173112
Kwaśniak-Kominek, Monika, Matusik, Jakub, Bajda, Tomasz, Manecki, Maciej, Rakovan, John, Marchlewski, Tomasz, Szala, Barbara (2015) Fourier transform infrared spectroscopic study of hydroxylpyromorphite Pb10(PO4)6OH2–hydroxylmimetite Pb10(AsO4)6(OH)2 solid solution series. Polyhedron, 99. 103-111 doi:10.1016/j.poly.2015.07.002
Localities for Hydroxylpyromorphite
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.
Austria | |
| Mikl et al. (2014) |
| Kirchner et al. (2007) |
| Kolitsch et al. (2016) |
Czech Republic | |
| Sejkora et al. (2021) |
Namibia | |
| Desor (03/21) |
USA (TL) | |
| Hålenius et al. (2017) +1 other reference |
| Smith (1977) |
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Copps Mine, Marenisco, Gogebic iron range, Gogebic County, Michigan, USA