Johnbaumite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Johnbaumite
John Leach Baum
Formula:
Ca5(AsO4)3(OH)
Colour:
Light grayish white
Lustre:
Sub-Vitreous, Resinous, Waxy, Greasy
Hardness:
4½
Specific Gravity:
3.68
Crystal System:
Hexagonal
Member of:
Name:
Named by Pete Dunn, Donald Peacor, and N. Newberry in 1980 in honor of Mr. John Leach Baum [March 15, 1916 New York, New York, USA - October 16, 2011 Hamburg, New Jersey, USA], graduate of Harvard University and student under Dr. Charles Palache. He was the former Head Geologist, Franklin Mine, Curator Emeritus of the Franklin Mineral Museum, author and contributor to the mineralogy and geology of the Franklin deposit.
Type Locality:
Dimorph of:
Apatite Group. The arsenate analogue of Hydroxylapatite. The OH analogue of Svabite and Turneaureite.
Unique Identifiers
Mindat ID:
2105
Long-form identifier:
mindat:1:1:2105:6
GUID
(UUID V4):
(UUID V4):
0b4d13f8-d21c-4bfd-bdb1-ddf79392d9e7
IMA Classification of Johnbaumite
Approved
Approval year:
1980
First published:
1980
Classification of Johnbaumite
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
41.8.3.3
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
8 : A5(XO4)3Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
8 : A5(XO4)3Zq
20.2.6
20 : Arsenates (also arsenates with phosphate, but without other anions)
2 : Arsenates of Be, Mg, Ca or Ba
20 : Arsenates (also arsenates with phosphate, but without other anions)
2 : Arsenates of Be, Mg, Ca or Ba
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 |
|---|---|---|
| Jbm | 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 Johnbaumite
Sub-Vitreous, Resinous, Waxy, Greasy
Transparency:
Transparent, Translucent
Colour:
Light grayish white
Streak:
White
Hardness:
4½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
{1010}
{1010}
Fracture:
Irregular/Uneven
Density:
3.68 g/cm3 (Measured) 3.73 g/cm3 (Calculated)
Optical Data of Johnbaumite
Type:
Uniaxial (-)
RI values:
nω = 1.687 nε = 1.684
Birefringence:
0.003
Max Birefringence:
δ = 0.003
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Optical Extinction:
Parallel
Pleochroism:
Non-pleochroic
Chemistry of Johnbaumite
Mindat Formula:
Ca5(AsO4)3(OH)
Elements listed:
Crystallography of Johnbaumite
Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Setting:
P63/m
Cell Parameters:
a = 9.7242(2) Å, c = 6.9657(9) Å
Ratio:
a:c = 1 : 0.716
Unit Cell V:
570.43 ų (Calculated from Unit Cell)
Z:
2
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0004928 | Johnbaumite | Lee Y J, Stephens P W, Tang Y, Li W, Phillips B L, Parise J B, Reeder R J (2009) Arsenate substitution in hydroxylapatite: Structural characterization of the Ca5(PxAs1-xO4)3OH solid solution American Mineralogist 94 666-675 |  | 2009 | synthetic | 0 | 293 |
| 0004929 | Johnbaumite | Lee Y J, Stephens P W, Tang Y, Li W, Phillips B L, Parise J B, Reeder R J (2009) Arsenate substitution in hydroxylapatite: Structural characterization of the Ca5(PxAs1-xO4)3OH solid solution American Mineralogist 94 666-675 | | 2009 | synthetic | 0 | 293 |
| 0004930 | Johnbaumite | Lee Y J, Stephens P W, Tang Y, Li W, Phillips B L, Parise J B, Reeder R J (2009) Arsenate substitution in hydroxylapatite: Structural characterization of the Ca5(PxAs1-xO4)3OH solid solution American Mineralogist 94 666-675 | | 2009 | synthetic | 0 | 293 |
| 0020732 | Johnbaumite | Biagioni C, Pasero M (2013) The crystal structure of johnbaumite, Ca5(AsO4)3OH, the arsenate analogue of hydroxylapatite American Mineralogist 98 1580-1584 | 2013 | Harstigen mine, Varmland, Sweden | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.98 Å | (50) |
| 3.47 Å | (50) |
| 2.90 Å | (100) |
| 2.82 Å | (70) |
| 2.80 Å | (70) |
| 2.68 Å | (50) |
| 2.03 Å | (40) |
| 1.879 Å | (40) |
Comments:
ICDD 33-265
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-𝑇 alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47g : [Halogen-bearing surface weathering minerals] |
Geological Setting:
Skarn
Type Occurrence of Johnbaumite
General Appearance of Type Material:
Grayish white masses and grains to 8 mm.
Place of Conservation of Type Material:
Royal Ontario Museum, Toronto, Canada.
The Natural History Museum, London, England.
Harvard University, Cambridge, Massachusetts, USA (116461).
The National Museum of Natural History, Washington, D.C., USA (144444).
The Natural History Museum, London, England.
Harvard University, Cambridge, Massachusetts, USA (116461).
The National Museum of Natural History, Washington, D.C., USA (144444).
Geological Setting of Type Material:
Metamorphic zinc-bearing skarn.
Associated Minerals at Type Locality:
Reference:
Dunn, P.J., Peacor, D.R., Newberry, N. (1980) Johnbaumite, a new member of the apatite group from Franklin, New Jersey. American Mineralogist, 65, 1143-1145.
Synonyms of Johnbaumite
Other Language Names for Johnbaumite
German:Johnbaumit
Spanish:Johnbaumita
Relationship of Johnbaumite 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 |
| Hydroxylpyromorphite | Pb5(PO4)3(OH) | Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm |
| 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:
| 19 photos of Johnbaumite associated with Calcite | CaCO3 |
| 7 photos of Johnbaumite associated with Roweite | Ca2Mn2+2B4O7(OH)6 |
| 6 photos of Johnbaumite associated with Franklinite | Zn2+Fe3+2O4 |
| 6 photos of Johnbaumite associated with Svabite | Ca5(AsO4)3F |
| 6 photos of Johnbaumite associated with Andradite | Ca3Fe3+2(SiO4)3 |
| 5 photos of Johnbaumite associated with Willemite | Zn2SiO4 |
| 4 photos of Johnbaumite associated with Diopside | CaMgSi2O6 |
| 4 photos of Johnbaumite associated with Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| 2 photos of Johnbaumite associated with Zincite | ZnO |
| 2 photos of Johnbaumite associated with Gahnite | ZnAl2O4 |
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 | 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 | Hydroxylpyromorphite | Pb5(PO4)3(OH) |
| 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 Johnbaumite
Pinkish orange in SW only
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 Johnbaumite
mindat.org URL:
https://www.mindat.org/min-2105.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Johnbaumite
Reference List:
Dunn, Pete J., Peacor, Donald R., Newberry, Nancy (1980) Johnbaumite, a new member of the apatite group from Franklin, New Jersey. American Mineralogist, 65 (11-12) 1143-1145
Kusachi, Isao, Henmi, Chiyoko, Kobayashi, Shoichi (1996) Johnbaumite from Fuka, Okayama Prefecture, Japan. Mineralogical Journal, 18 (2) 60-66 doi:10.2465/minerj.18.60
Lee, Y. J., Stephens, P. W., Tang, Y., Li, W., Phillips, B. L., Parise, J. B., Reeder, R. J. (2009) Arsenate substitution in hydroxylapatite: Structural characterization of the Ca5(PxAs1-xO4)3OH solid solution. American Mineralogist, 94 (5) 666-675 doi:10.2138/am.2009.3120
Henderson, C. M. B., Bell, A. M. T., Charnock, J. M., Knight, K. S., Wendlandt, R. F., Plant, D. A., Harrison, W. J. (2009) Synchrotron X-ray absorption spectroscopy and X-ray powder diffraction studies of the structure of johnbaumite [Ca10(AsO4)6(OH,F)2] and synthetic Pb-, Sr- and Ba-arsenate apatites and some comments on the crystal chemistry of the apatite structure type in general. Mineralogical Magazine, 73 (3) 433-455 doi:10.1180/minmag.2009.073.3.433
Biagioni, C., Pasero, M. (2013) The crystal structure of johnbaumite, Ca5(AsO4)3OH, the arsenate analogue of hydroxylapatite. American Mineralogist, 98 (8) 1580-1584 doi:10.2138/am.2013.4443
Localities for Johnbaumite
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.
China | |
| Desor (01/22) |
Germany | |
| Schimak et al. (02/2021) |
Italy | |
| Castellaro et al. (2021) |
Japan | |
| American Mineralogist (1999) +2 other references |
Romania | |
| Hirtopanu et al. (2015) |
Russia | |
| Malinko +3 other references |
Sweden | |
| Holtstam et al. (2001) |
| www.mikon-online.com (n.d.) |
| Österberg (2003) +1 other reference |
| Holtstam et al. (1998) |
| Biagioni et al. (2013) |
| Nysten (2020) |
| Nysten et al. (2016) +1 other reference | |
USA (TL) | |
| Dunn et al. (1980) +1 other reference |
| Jenkins et al. (1994) +1 other reference |
Quick NavTopAbout JohnbaumiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Franklin Mine, Franklin, Sussex County, New Jersey, USA