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Farringtonite

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Springwater meteorite, Springwater, Saskatchewan, Canada
© 2008, JGW

Formula:
Mg
 
3
[PO
 
4
]
 
2
System:Monoclinic
Dimorph of:Chopinite
This page provides mineralogical data about Farringtonite.

Classification of Farringtonite

IMA status:Approved
Strunz 8th edition ID:7/A.05-10
Nickel-Strunz 10th (pending) edition ID:8.AB.05

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
Dana 7th edition ID:38.3.1.2
Dana 8th edition ID:38.3.1.2

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
3 : (AB)3(XO4)2
Hey's CIM Ref.:19.3.14

19 : Phosphates
3 : Phosphates of Be and Mg
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Type Occurrence of Farringtonite

Type Locality:Springwater meteorite, Springwater, Saskatchewan, Canada
Year of Discovery:1961

Crystallography of Farringtonite

Crystal System:Monoclinic
Cell Parameters:a = 7.59Å, b = 8.23Å, c = 5.07Å
β = 94.06°
Ratio:a:b:c = 0.922 : 1 : 0.616
Unit Cell Volume:V 315.91 ų (Calculated from Unit Cell)

Optical Data of Farringtonite

Type:Biaxial (+)
RI values: nα = 1.540 nβ = 1.544 nγ = 1.559
2V:Measured: 54° to 55°, Calculated: 56°
Maximum Birefringence:δ = 0.019

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:r < v

Chemical Properties of Farringtonite

Formula:
Mg
 
3
[PO
 
4
]
 
2
Essential elements:Mg, O, P
All elements listed in formula:Mg, O, P

Relationship of Farringtonite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.AB.10Ferrisicklerite
(Fe
3+
 
,LiMn
2+
 
)[PO
 
4
]
8.AB.10Heterosite
(Fe
3+
 
,Mn
3+
 
)[PO
 
4
]
8.AB.10Lithiophilite
LiMn
2+
 
[PO
 
4
]
8.AB.10Natrophilite
NaMn
2+
 
[PO
 
4
]
8.AB.10Purpurite
(Mn
3+
 
,Fe
3+
 
)[PO
 
4
]
8.AB.10Sicklerite
(LiMn
2+
 
,Fe
3+
 
)[PO
 
4
]
8.AB.10Simferite
Li(Mg,Fe
3+
 
,Mn
3+
 
)
 
2
[PO
 
4
]
 
2
8.AB.10Triphylite
LiFe
2+
 
[PO
 
4
]
8.AB.15Sarcopside
(Fe
2+
 
,Mn
2+
 
,Mg)
 
3
[PO
 
4
]
 
2
8.AB.15Chopinite
(Mg,Fe
2+
 
)
 
3
[PO
 
4
]
 
2
8.AB.20Beusite
(Mn
2+
 
,Fe
2+
 
,Ca,Mg)
 
3
[PO
 
4
]
 
2
8.AB.20Graftonite
(Fe
2+
 
,Mn
2+
 
,Ca)
 
3
[PO
 
4
]
 
2
8.AB.25Xanthiosite
Ni
 
3
[AsO
 
4
]
 
2
8.AB.30Lammerite
Cu
 
3
[AsO
 
4
]
 
2
8.AB.30IMA2009-002
Cu
 
3
(AsO
 
4
)
 
2
8.AB.35Mcbirneyite
Cu
 
3
(VO
 
4
)
 
2
8.AB.35Stranskiite
(Zn,Cu)
 
3
[AsO
 
4
]
 
2
8.AB.40Lyonsite
Cu
 
3
Fe
 
4
(VO
 
4
)
 
6
Related Minerals - Hey's Index Grouping:

- +
19.3.1Moraesite
Be
 
2
[OH|PO
 
4
] · 4H
 
2
O
19.3.2Beryllonite
NaBe[PO
 
4
]
19.3.3Hurlbutite
CaBe
 
2
[PO
 
4
]
 
2
19.3.4Hydroxylherderite
CaBe[(OH,F)|PO
 
4
]
19.3.5Glucine
CaBe
 
4
[(OH)
 
2
|PO
 
4
]
 
2
 · 0.5H
 
2
O
19.3.6Fransoletite
Ca
 
3
Be
 
2
[HPO
 
4
|PO
 
4
]
 
2
 · 4H
 
2
O
19.3.7Uralolite
Ca
 
2
Be
 
4
[OH|PO
 
4
]
 
3
 · 5H
 
2
O
19.3.9Pahasapaite
Li
 
8
(Ca,Li,K)
 
10.5
Be
 
24
(PO
 
4
)
 
24
·38H
 
2
O
19.3.10Tiptopite
K
 
2
(Na,Ca)
 
2
Li
 
3
Be
 
6
[OH|(PO
 
4
)
 
3
]
 
2
 · H
 
2
O
19.3.11Gainesite
Na(Na,K)(Be,Li)Zr
 
2
[PO
 
4
]
 
4
 · 1.5-2H
 
2
O
19.3.12Roscherite
Ca
 
2
(Mn
2+
 
,Fe
2+
 
)
 
5
Be
 
4
[(OH)
 
4
|(PO
 
4
)
 
6
] · 6H
 
2
O
19.3.13Faheyite
(Mn,Mg,Na)Be
 
2
Fe
 
2
(PO
 
4
)
 
4
·6H
 
2
O
19.3.15Holtedahlite
Mg
 
2
[OH|PO
 
4
]
19.3.16Althausite
Mg
 
2
[(OH,F)|PO
 
4
]
19.3.17Newberyite
MgHPO
 
4
·3H
 
2
O
19.3.18Phosphorrösslerite
MgHPO
 
4
·7H
 
2
O
19.3.19Bobierrite
Mg
 
3
(PO
 
4
)
 
2
·8H
 
2
O
19.3.20Barićite
(Mg,Fe)
 
3
(PO
 
4
)
 
2
·8H
 
2
O
19.3.21Panethite
(Na,Ca)
 
2
(Mg,Fe
2+
 
)
 
2
[PO
 
4
]
 
2
19.3.22Dittmarite
NH
 
4
MgPO
 
4
·H
 
2
O
19.3.23Struvite
NH
 
4
MgPO
 
4
·6H
 
2
O
19.3.24Hannayite
(NH
 
4
)
 
2
Mg
 
3
H
 
4
(PO
 
4
)
 
4
·8H
 
2
O
Related Minerals - Dana Grouping):

- +
38.3.1.3Chopinite
(Mg,Fe
2+
 
)
 
3
[PO
 
4
]
 
2

Other Names for Farringtonite

Other Languages:
German:Farringtonit
Russian:Фаррингтонит
Spanish:Farringtonita

Other Information

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 Farringtonite

Reference List:American Mineralogist: 46: 1513.

Acta Chemica Scandinavica: 22: 1466-1474.

Internet Links for Farringtonite

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    Localities for Farringtonite

    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.
    (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.
    Canada
     
    • Saskatchewan
      • Springwater
    		AM 58 (1973), 949, Geochim.Cosmochim. Acta (1961) 24, 198-205
    • Yukon Territory
      • Whitehorse Mining District
        • Carcross
          • Tagish Lake
    		Lunar and Planetary Science XXXII (2001)
    China
     
    • Anhui Province
      • Tongling Prefecture
        • Tongling Mining District
          • Tongguanshan ore field
    		Cen Kuang and Yu Chongwen (2001): Science in China, Series D (Earth Sciences), 44(4), 289-297.
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 16th Nov 2009 09:07:16