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Mimetite-M

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Big Photo

Johanngeorgenstadt, Johanngeorgenstadt District, Erzgebirge, Saxony, Germany
© Thomas Witzke

Show Mimetite-M Photos (8)



Formula:
Pb
 
5
(AsO
 
4
)
 
3
Cl
System:MonoclinicColour:Pale greenish yellow, ...
Lustre:Sub-AdamantineHardness:4
Name:For its monoCLINic structure and chemical identity with mimetite.
Dimorph of:Mimetite


Apatite Group.

Formerley called clinomimetite (Day, 1993).

Classification of Mimetite-M

IMA status:Discredited 2010
Strunz 8th edition ID:7/B.39-165
Nickel-Strunz 10th (pending) edition ID: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
Dana 7th edition ID:41.8.6.1
Dana 8th edition ID:41.8.6.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
8 : A5(XO4)3Zq
Hey's CIM Ref.:22.2.11

22 : Phosphates, Arsenates or Vanadates with other Anions
2 : Phosphates, arsenates or vanadates with chloride
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Type Occurrence of Mimetite-M

Type Locality:Treue Freundschaft Mine, Johanngeorgenstadt, Johanngeorgenstadt District, Erzgebirge, Saxony, Germany
Year of Discovery:1991

Physical Properties of Mimetite-M

Lustre:Sub-Adamantine
Colour:Pale greenish yellow, white.
Streak:White
Hardness (Mohs):4

Crystallography of Mimetite-M

Crystal System:Monoclinic
Cell Parameters:a = 10.19Å, b = 20.37Å, c = 7.46Å
β = 119.9°
Ratio:a:b:c = 0.5 : 1 : 0.366
Unit Cell Volume:V 1,342.37 ų (Calculated from Unit Cell)

Optical Data of Mimetite-M

Type:Biaxial (-)
Dispersion:extreme

Chemical Properties of Mimetite-M

Formula:
Pb
 
5
(AsO
 
4
)
 
3
Cl
Essential elements:As, Cl, O, Pb
All elements listed in formula:As, Cl, O, Pb
Common Impurities:Ca,Si,S,P

Relationship of Mimetite-M to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.BN.05Alforsite
Ba
 
5
(PO
 
4
)
 
3
Cl
8.BN.05Belovite-(Ce)
NaCeSr
 
3
(PO
 
4
)
 
3
F
8.BN.05Carbonate-rich Fluorapatite
Ca
 
5
(PO
 
4
,CO
 
3
)
 
3
(F,O)
8.BN.05Carbonate-rich Hydroxylapatite
Ca
 
5
(PO
 
4
,CO
 
3
)
 
3
(OH,O)
8.BN.05Chlorapatite
Ca
 
5
(PO
 
4
)
 
3
Cl
8.BN.05Johnbaumite-M
Ca
 
5
(AsO
 
4
)
 
3
OH
8.BN.05Fluorapatite
Ca
 
5
(PO
 
4
)
 
3
F
8.BN.05Hedyphane
Pb
 
3
Ca
 
2
(AsO
 
4
)
 
3
Cl
8.BN.05Hydroxylapatite
Ca
 
5
(PO
 
4
)
 
3
(OH)
8.BN.05Johnbaumite
Ca
 
5
(AsO
 
4
)
 
3
OH
8.BN.05Mimetite
Pb
 
5
(AsO
 
4
)
 
3
Cl
8.BN.05Morelandite
Ca
 
2
Ba
 
3
(AsO
 
4
)
 
3
Cl
8.BN.05Pyromorphite
Pb
 
5
(PO
 
4
)
 
3
Cl
8.BN.05Fluorstrophite
SrCaSr
 
3
(PO
 
4
)
 
3
F
8.BN.05Svabite
Ca
 
5
(AsO
 
4
)
 
3
F
8.BN.05Turneaureite
Ca
 
5
(AsO
 
4
)
 
3
Cl
8.BN.05Vanadinite
Pb
 
5
(VO
 
4
)
 
3
Cl
8.BN.05Belovite-(La)
NaLaSr
 
3
(PO
 
4
)
 
3
F
8.BN.05Deloneite
(Na
 
0.5
REE
 
0.25
Ca
 
0
 · 25)(Ca
 
0.75
REE
 
0.25
)Sr
 
1.5
(CaNa
 
0.25
REE
 
0.25
)(PO
 
4
)
 
3
F
 
0.5
(OH)
 
0.5
8.BN.05Fluorcaphite
SrCaCa
 
3
(PO
 
4
)
 
3
F
8.BN.05Kuannersuite-(Ce)
NaCeBa
 
3
(PO
 
4
)
 
3
F
 
0.5
Cl
 
0.5
8.BN.05Hydroxylapatite-M
Ca
 
5
(PO
 
4
)
 
3
OH
8.BN.05Phosphohedyphane
Ca
 
2
Pb
 
3
(PO
 
4
)
 
3
Cl
8.BN.05Stronadelphite
Sr
 
5
(PO
 
4
)
 
3
F
8.BN.05Fluorphosphohedyphane
Ca
 
2
Pb
 
3
(PO
 
4
)
 
3
F
8.BN.10Arctite
Na
 
2
Ca
 
4
(PO
 
4
)
 
3
F
Related Minerals - Hey's Index Grouping:

- +
22.2.1Sampleite
NaCaCu
 
5
(PO
 
4
)
 
4
Cl · 5H
 
2
O
22.2.2Lavendulan
NaCaCu
 
5
(AsO
 
4
)
 
4
Cl · 5H
 
2
O
22.2.3Chlorapatite
Ca
 
5
(PO
 
4
)
 
3
Cl
22.2.4Turneaureite
Ca
 
5
(AsO
 
4
)
 
3
Cl
22.2.5Shubnikovite
Ca
 
2
Cu
 
8
(AsO
 
4
)
 
6
(OH)Cl · 7H
 
2
O
22.2.6Richelsdorfite
Ca
 
2
Cu
 
5
Sb(AsO
 
4
)
 
4
(OH)
 
6
Cl · 6H
 
2
O
22.2.7Alforsite
Ba
 
5
(PO
 
4
)
 
3
Cl
22.2.8Morelandite
Ca
 
2
Ba
 
3
(AsO
 
4
)
 
3
Cl
22.2.9Pyromorphite
Pb
 
5
(PO
 
4
)
 
3
Cl
22.2.10Mimetite
Pb
 
5
(AsO
 
4
)
 
3
Cl
22.2.12Sahlinite
Pb
 
14
(AsO
 
4
)
 
2
O
 
9
Cl
 
4
22.2.13Georgiadèsite
Pb
 
4
(AsO
 
3
)Cl
 
4
(OH)
22.2.14Vanadinite
Pb
 
5
(VO
 
4
)
 
3
Cl
22.2.15Kombatite
Pb
 
14
(VO
 
4
)
 
2
O
 
9
Cl
 
4
22.2.16Leningradite
PbCu
 
3
(VO
 
4
)
 
2
Cl
22.2.17Hedyphane
Pb
 
3
Ca
 
2
(AsO
 
4
)
 
3
Cl
22.2.18Nealite
Pb
 
4
Fe
2+
 
(As
3+
 
O
 
3
)
 
2
Cl
 
4
 · 2H
 
2
O

Other Names for Mimetite-M

Synonyms:
ClinomimetiteIMA1990-043IMA1990-043a
Other Languages:
German:Klinomimetesit
Russian:Клиномиметит
Spanish:Clinomimetita

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 Mimetite-M

Reference List:

- +
Dai, Y. (1993). Clinomimetite. The history and substantiation of the natural monoclinic dimorph of mimetite. Mineralogical Record: 24, 307-310.

Dai, Y., J. M. Hughes & P. B. Moore (1991): The crystal structures of mimetite and clinomimetite, Pb5(AsO4)Cl: Canadian Mineralogist: 29, 369-376.

Eur. J. Mineral. Fast Track doi:10.1127/0935-1221/2010/0022-2022

Internet Links for Mimetite-M

Search Engines:
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    • External Links:
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    • Localities for Mimetite-M

    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.
    Hide Locality List
    (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.
    France
     
    • Rhône-Alpes
      • Rhône
        • Poule-les-Echarmeaux
    		Le cahier des Micromonteurs, 1-2010, p. 4, Association Jean Wyart, bilan des activités 2009, Vincent Bourgoin, Georges Favreau
    Germany
     
    • Rhineland-Palatinate
      • Westerwald
        • Wied Iron Spar District
          • Altenkirchen
            • Bürdenbach
    		[Mineralogical Record 1993 307-310]
    • Saxony
      • Erzgebirge
        • Johanngeorgenstadt District
          • Johanngeorgenstadt
    		[Mineralogical Record 1993 307-310; Wittern: "Mineralfundorte in Deutschland", 2001]
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamariza)
    		No reference listed
          • Plaka
            • Plaka Mines
    		No reference listed
          • Sounion Area
            • Agia Varvara Mines (St Barbara Mines)
    		Lapis, 24, 7/8, (1999)
    No reference listed
            • Sounion Mines
    		Lapis, 24, 7/8 (1999)
          • Soureza area
    		No reference listed
    USA
     
    • Utah
      • Juab Co.
        • East Tintic Mts
          • Tintic District
    		various added photos
    UGMS Bull 117 Minerals and Mineral Localities of Utah and Min Rec 1993 p 307-310
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. 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. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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