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Bradleyite

Formula:
Na
 
3
Mg[PO
 
4
|CO
 
3
]
System:MonoclinicColour:Light grey
Hardness:3 - 4
Name:After geologist Wilmot H. Bradley, U.S. Geological Survey, who conducted geologic investigations in the Green River area, Wyoming.
This page provides mineralogical data about Bradleyite.

Classification of Bradleyite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:5/C.04-10
Nickel-Strunz 10th (pending) edition ID:5.BF.10

5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
F : With (Cl), SO4, PO4, TeO3
Dana 8th edition ID:43.2.1.1

43 : COMPOUND PHOSPHATES, ETC.
2 : Anhydrous Normal Compound Phosphates, etc·
Hey's CIM Ref.:22.4.1

22 : Phosphates, Arsenates or Vanadates with other Anions
4 : Phosphates, arsenates or vanadates with carbonate
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Type Occurrence of Bradleyite

Type Locality:John Hay Jr. Well No. 1, Green River Formation, Sweetwater Co., Wyoming, USA
Year of Discovery:1941
Geological Setting of type material:Oil shale deposit.
Associated Minerals at type locality:
TronaShortiteQuartzPyritePirssonite
NorthupiteMontmorilloniteGaylussiteDolomiteAlstonite

Physical Properties of Bradleyite

Colour:Light grey
Hardness (Mohs):3 - 4
Density (measured):2.734 g/cm3

Crystallography of Bradleyite

Crystal System:Monoclinic
Cell Parameters:a = 8.85Å, b = 6.63Å, c = 5.16Å
β = 90.42°
Ratio:a:b:c = 1.335 : 1 : 0.778
Unit Cell Volume:V 302.76 ų (Calculated from Unit Cell)
Morphology:Extremely fine-grained masses.

Optical Data of Bradleyite

Type:Biaxial (-)
RI values: nα = 1.490 nγ = 1.560
Maximum Birefringence:δ = 0.070

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:none

Chemical Properties of Bradleyite

Formula:
Na
 
3
Mg[PO
 
4
|CO
 
3
]
Essential elements:C, Mg, Na, O, P
All elements listed in formula:C, Mg, Na, O, P

Relationship of Bradleyite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.BF.05Ferrotychite
Na
 
6
(Fe,Mn,Mg)
 
2
SO
 
4
(CO
 
3
)
 
4
5.BF.05Manganotychite
Na
 
6
Mn
 
2
SO
 
4
(CO
 
3
)
 
4
5.BF.05Northupite
Na
 
3
Mg(CO
 
3
)
 
2
Cl
5.BF.05Tychite
Na
 
6
Mg
 
2
SO
 
4
(CO
 
3
)
 
4
5.BF.10Bonshtedtite
Na
 
3
Fe
2+
 
[PO
 
4
|CO
 
3
]
5.BF.10Crawfordite
Na
 
3
Sr[PO
 
4
|CO
 
3
]
5.BF.10Sidorenkite
Na
 
3
Mn
2+
 
[PO
 
4
|CO
 
3
]
5.BF.15Daqingshanite-(Ce)
(Sr,Ca,Ba)
 
2
(Ce,La)PO
 
4
(CO
 
3
,OH,F)
 
3
5.BF.20Reederite-(Y)
Na
 
15
Y
 
2
[Cl|SO
 
3
F|(CO
 
3
)
 
9
]
5.BF.25Mineevite-(Y)
Na
 
25
Ba(Y,Gd,Dy)
 
2
[F
 
2
|Cl|(SO
 
4
)
 
2
|(HCO
 
3
)
 
4
|(CO
 
3
)
 
11
]
5.BF.30Brianyoungite
Zn
 
3
[(OH)
 
4
|(CO
 
3
,SO
 
4
)]
5.BF.35Philolithite
Pb
 
12
Mn
2+
 
(Mg,Mn
2+
 
)
 
2
(Mn
2+
 
,Mg)
 
4
[O
 
6
|(OH)
 
12
|(CO
 
3
)
 
4
|SO
 
4
|Cl
 
4
]
5.BF.40Leadhillite
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
5.BF.40Macphersonite
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
5.BF.40Susannite
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
Related Minerals - Hey's Index Grouping:

- +
22.4.2Kovdorskite
Mg
 
2
(PO
 
4
)(OH)·3H
 
2
O
22.4.3Carbonate-rich Apatite-(CaOH)
Ca
 
5
[(OH,O)|(PO
 
4
,CO
 
3
)
 
3
]
22.4.4Carbonate-rich Apatite-(CaF)
Ca
 
5
[(F,O)|(PO
 
4
,CO
 
3
)
 
3
]
22.4.5Tyrolite
Ca
 
2
Cu
 
9
[(OH)
 
4
|(H
 
2
O)
 
11
|CO
 
3
|(AsO
 
4
)
 
4
] · 0-1H
 
2
O
22.4.6Heneuite
CaMg
 
5
(CO
 
3
)(PO
 
4
)
 
3
OH
22.4.7Girvasite
NaCa
 
2
Mg
 
3
[(OH)
 
2
|CO
 
3
|H
 
2
PO
 
4
|(PO
 
4
)
 
2
] · 4H
 
2
O
22.4.8Daqingshanite-(Ce)
(Sr,Ca,Ba)
 
2
(Ce,La)PO
 
4
(CO
 
3
,OH,F)
 
3
22.4.9Gartrellite
Pb(Cu,Fe
3+
 
,Zn)
 
2
[AsO
 
4
,SO
 
4
]
 
2
 · 2(H
 
2
O,OH)
22.4.10Voggite
Na
 
2
Zr[OH|CO
 
3
|PO
 
4
] · 2H
 
2
O
22.4.11Bonshtedtite
Na
 
3
Fe
2+
 
[PO
 
4
|CO
 
3
]

Other Names for Bradleyite

Other Languages:
German:Bradleyit
Spanish:Bradleyita

Other Information

Other Information:Slowly decomposed by cold water with Na2CO3 released to solution. Readily soluble in dilute HCl.
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Bradleyite

Reference List:Fahey (1941) American Mineralogist: 26: 646-650.

Brasseur (1946) Bull. soc. roy. sc. Liége: 15: 527.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 295.

Articles/Blogs about Bradleyite

Internet Links for Bradleyite

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    Localities for Bradleyite

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Bosnia and Herzegovina
     
    • Federation of Bosnia and Herzegovina
      • Tuzla Canton
        • Tuzla
    		Am Min 79: pp 562-569
    Canada
     
    • Québec
      • Rouville Co.
        • Mont Saint-Hilaire
    		No reference listed
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Afrikanda
    		www.koeln.netsurf.de/~w.steffens/afri.htm
          • Khibiny Massif
    		Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages
    USA
     
    • Wyoming
      • Sweetwater Co.
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 139, 279, 295.
    Am Min 26:646-650
    [Clark, 1993, "Hey's Mineral Index"]
    Mineral and/or Locality
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