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Freedite

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Långban, Filipstad, Värmland, Sweden
© Brent Thorne

Show Freedite Photos (2)
Formula:
Pb
 
15
(Cu,Fe
2+
 
)
 
3
[O
 
7
|Cl
 
10
|(AsO
 
3
)
 
4
]
System:MonoclinicColour:Greenish yellow
Hardness:3
Name:After Robert L. Freed, American mineralogist.
This page provides mineralogical data about Freedite.

Classification of Freedite

IMA status:Approved
Strunz 8th edition ID:4/J.03-20
Nickel-Strunz 10th (pending) edition ID:4.JB.65

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
B : Arsenites, antimonites, bismuthites; with additional anions, without H2O
Dana 8th edition ID:46.1.5.1

46 : ANTIMONITES AND ARSENITES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO3)pZq
Hey's CIM Ref.:23.14

23 : Arsenites
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Type Occurrence of Freedite

Type Locality:Långban, Filipstad, Värmland, Sweden
Year of Discovery:1985

Physical Properties of Freedite

Lustre:Vitreous
Colour:Greenish yellow
Streak:Yellow
Hardness (Mohs):3
Cleavage:Perfect
On [100].
Density (calculated):7.43 g/cm3

Crystallography of Freedite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/m {B1 1 2/m} {C2/m} {C1 2/m 1}
Cell Parameters:a = 13.578Å, b = 20.099Å, c = 7.465Å
β = 105.73°
Ratio:a:b:c = 0.676 : 1 : 0.371
Unit Cell Volume:V 1960.94 ų
Z:4
Morphology:Crystals commonly aggregated; radial forms.

Optical Data of Freedite

Type:Biaxial

Chemical Properties of Freedite

Formula:
Pb
 
15
(Cu,Fe
2+
 
)
 
3
[O
 
7
|Cl
 
10
|(AsO
 
3
)
 
4
]
Essential elements:As, Cl, Cu, O, Pb
All elements listed in formula:As, Cl, Cu, Fe, O, Pb

Relationship of Freedite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.JB.05Fetiasite
(Fe
3+
 
,Fe
2+
 
,Ti)
 
3
[O
 
2
|As
 
2
O
 
5
]
4.JB.10Manganarsite
Mn
 
3
[(OH)
 
4
|As
 
2
O
 
4
]
4.JB.15Magnussonite
Mn
 
10
As
 
6
O
 
18
(OH,Cl)
 
2
4.JB.15UM1984-09-AsO:ClHMn
Mn
 
10
As
 
6
O
 
18
(OH)Cl
4.JB.20Armangite
Mn
2+
26
[CO
 
3
|(HAsO
 
3
)
 
4
|(AsO
 
3
)
 
14
]
4.JB.25Nanlingite
NaCa
 
6
(Mg,Fe,Li)
 
12
(AsO
 
3
)
 
2
[Fe(AsO
 
3
)
 
6
]F
 
14
·
4.JB.30Asbecasite
Ca
 
3
(Ti,Sn
4+
 
)Be
 
2
[(AsO
 
3
)
 
3
|SiO
 
4
]
 
2
4.JB.35Stenhuggarite
CaFeSbO(AsO
 
3
)
 
2
4.JB.40Trigonite
Pb
 
3
Mn
2+
 
[HAsO
 
3
|(AsO
 
3
)
 
2
]
4.JB.45Finnemanite
Pb
 
5
[Cl|(AsO
 
3
)
 
3
]
4.JB.50Gebhardite
Pb
 
8
[O|Cl
 
6
|(As
 
2
O
 
5
)
 
2
]
4.JB.55Derbylite
(Fe,Fe,Ti)
 
7
SbO
 
13
(OH)
4.JB.55Tomichite
(V,Fe)
 
4
Ti
 
3
AsO
 
13
OH
4.JB.55Graeserite
(Fe
3+
 
,Ti)
 
4
Ti
 
3
AsO
 
13
(OH)
4.JB.60Hemloite
(As,Sb)
 
2
(Ti,V,Fe,Al)
 
12
O
 
23
(OH)
4.JB.70Georgiadèsite
Pb
 
16
[(OH)
 
6
|Cl
 
14
|(AsO
 
4
)
 
4
]
4.JB.75Ekatite
(Fe
3+
 
,Fe
2+
 
,Zn)
 
12
(OH)
 
6
(AsO
 
3
)
 
6
[AsO
 
3
,HOSiO
 
3
]
 
2
Related Minerals - Hey's Index Grouping:

- +
23.2Nanlingite
NaCa
 
6
(Mg,Fe,Li)
 
12
(AsO
 
3
)
 
2
[Fe(AsO
 
3
)
 
6
]F
 
14
·
23.3Leiteite
Zn[As
 
2
O
 
4
]
23.5Kuznetsovite
(Hg-Hg)Hg
2+
 
[Cl|AsO
 
4
]
23.6Paulmooreite
Pb
 
2
[As
 
2
O
 
5
]
23.7Ecdemite
Pb
 
6
[As
 
2
O
 
7
|Cl
 
4
]
23.8Heliophyllite
Pb
 
3
AsO
 
4-n
Cl
 
2n+1
23.9Finnemanite
Pb
 
5
[Cl|(AsO
 
3
)
 
3
]
23.10Gebhardite
Pb
 
8
[O|Cl
 
6
|(As
 
2
O
 
5
)
 
2
]
23.11Zimbabweite
(Na,K)
 
2
PbAs
 
4
(Ta,Nb,Ti)
 
4
O
 
18
23.13Rouseite
Pb
 
2
Mn
2+
 
[AsO
 
3
]
 
2
 · 2H
 
2
O
23.15Manganarsite
Mn
 
3
[(OH)
 
4
|As
 
2
O
 
4
]
23.17Armangite
Mn
2+
26
[CO
 
3
|(HAsO
 
3
)
 
4
|(AsO
 
3
)
 
14
]
23.18Karibibite
Fe
 
2
As
 
4
O
 
9
23.19Schneiderhöhnite
Fe
2+
 
Fe
3+
3
[As
 
5
O
 
13
]
23.20Lazarenkoite
(Ca,Fe)FeAs
 
3
O
 
7
·3H
 
2
O
23.21Stenhuggarite
CaFeSbO(AsO
 
3
)
 
2
23.22Tomichite
(V,Fe)
 
4
Ti
 
3
AsO
 
13
OH

Other Names for Freedite

Synonyms:
IMA1984-012
Other Languages:
German:Freedit
Russian:Фридит
Spanish:Freedita

Other Information

Other Information:Not radioactive.
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 Freedite

Reference List:American Mineralogist: 70: 845-848.

American Mineralogist: 73: 667.

Mineralogy and Petrology: 36: 85-92.

Internet Links for Freedite

Search Engines:
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  • Look for Freedite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Freedite in the Natural History Museum (London) online catalogue
  • Freedite details from Handbook of Mineralogy (PDF)
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    Localities for Freedite

    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.
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District slag localities
          • Sounion area
    		No reference listed
    Sweden
     
    • Värmland
      • Filipstad
    		Amer.Min.(1985) 70, 845-848; Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
    Mineral and/or Locality
    Google
     
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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: 23rd Oct 2009 00:11:38