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Larosite

Formula:
(Cu,Ag)
 
21
(Pb,Bi)
 
2
S
 
13
System:OrthorhombicHardness:3 - 3½
This page provides mineralogical data about Larosite.

Classification of Larosite

IMA status:Approved
Strunz 8th edition ID:2/E.02-10
Nickel-Strunz 10th (pending) edition ID:2.LB.35

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
B : With essential Pb
Dana 8th edition ID:2.16.9.1

2 : SULFIDES
16 : Miscellaneous
Hey's CIM Ref.:5.7.43

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals
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Type Occurrence of Larosite

Type Locality:Foster Mine (AGNICO Mill), Glen Lake, Coleman Township, Timiskaming District, Ontario, Canada
Year of Discovery:1971

Physical Properties of Larosite

Hardness (Mohs):3 - 3½

Crystallography of Larosite

Crystal System:Orthorhombic
Cell Parameters:a = 22.15Å, b = 24.03Å, c = 11.67Å
Ratio:a:b:c = 0.922 : 1 : 0.486
Unit Cell Volume:V 6,211.53 ų (Calculated from Unit Cell)

Chemical Properties of Larosite

Formula:
(Cu,Ag)
 
21
(Pb,Bi)
 
2
S
 
13
Essential elements:Cu, Pb, S
All elements listed in formula:Ag, Bi, Cu, Pb, S

Relationship of Larosite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.LB.05Miharaite
Cu
 
4
FePbBiS
 
6
2.LB.30Ardaite
Pb
 
19
Sb
 
13
S
 
35
Cl
 
7
2.LB.30Launayite
Pb
 
22
Sb
 
26
S
 
61
2.LB.30Madocite
Pb
 
17
Sb
 
16
S
 
41
2.LB.30Playfairite
Pb
 
16
Sb
 
18
S
 
43
2.LB.30Sorbyite
Pb
 
19
(Sb,As)
 
20
S
 
49
2.LB.30Sterryite
Ag
 
2
Pb
 
10
(Sb,As)
 
12
S
 
29
2.LB.40Petrovicite
Cu
 
3
HgPbBiSe
 
5
2.LB.40Mazzettiite
Ag
 
3
HgPbSbTe
 
5
2.LB.45Crerarite
Pt
 
2-x
(Bi,Pb)
 
11
(S,Se)
 
11
Related Minerals - Hey's Index Grouping:

- +
5.7.1Seligmannite
PbCuAsS
 
3
5.7.2Bournonite
PbCuSbS
 
3
5.7.3Meneghinite
Pb
 
13
CuSb
 
7
S
 
24
5.7.4Gladite
PbCuBi
 
5
S
 
9
5.7.5Lindströmite
Pb
 
3
Cu
 
3
Bi
 
7
S
 
15
5.7.6Krupkaite
PbCuBi
 
3
S
 
6
5.7.7Hammarite
Pb
 
2
Cu
 
2
Bi
 
4
S
 
9
5.7.8Friedrichite
Pb
 
5
Cu
 
5
Bi
 
7
S
 
18
5.7.9Aikinite
PbCuBiS
 
3
5.7.10Nuffieldite
Pb
 
2
Cu(Pb,Bi)Bi
 
2
S
 
7
5.7.11Jaskólskiite
Pb
 
2+x
Cu
 
x
(Sb,Bi)
 
2-x
S
 
6
 (x = 0.2)
5.7.12Tintinaite
Pb
 
22
Cu
 
4
(Sb,Bi)
 
30
S
 
69
5.7.13Kobellite
Pb
 
22
Cu
 
4
(Bi,Sb)
 
30
S
 
69
5.7.14Proudite
CuPb
 
7.5
Bi
 
9.33
(S,Se)
 
22
5.7.15Nordströmite
CuPb
 
3
Bi
 
7
(Se
 
4
S
 
10
)
5.7.16Watkinsonite
Cu
 
2
PbBi
 
4
(Se,S,Te)
 
8
5.7.17Pekoite
PbCuBi
 
11
(S,Se)
 
18
5.7.18Petrovicite
Cu
 
3
HgPbBiSe
 
5
5.7.19Eclarite
(Cu,Fe)Pb
 
9
Bi
 
12
S
 
28
5.7.20Marrite
AgPbAsS
 
3
5.7.21Baumhauerite-2a
Pb
 
11
Ag(As,Sb)
 
18
S
 
36
5.7.22Andorite
PbAgSb
 
3
S
 
6
5.7.23Ramdohrite
(Cd,Mn,Fe)Ag
 
5.5
Pb
 
12
Sb
 
21.5
S
 
48
5.7.24Roshchinite
Ag
 
19
Pb
 
10
Sb
 
51
S
 
96
5.7.25Ourayite
Ag
 
3
Pb
 
4
Bi
 
5
S
 
13
5.7.26Eskimoite
Ag
 
7
Pb
 
10
Bi
 
15
S
 
36
5.7.27Fizélyite
Pb
 
14
Ag
 
5
Sb
 
21
S
 
48
 ?
5.7.28Owyheeite
Ag
 
3+x
Pb
 
10-2x
Sb
 
11+x
S
 
28
, -0.13 < x > +0.20
5.7.29Freieslebenite
AgPbSbS
 
3
5.7.30Diaphorite
Ag
 
3
Pb
 
2
Sb
 
3
S
 
8
5.7.31Sterryite
Ag
 
2
Pb
 
10
(Sb,As)
 
12
S
 
29
5.7.32Vikingite
Ag
 
5
Pb
 
8
Bi
 
13
S
 
30
5.7.33Zoubekite
AgPb
 
4
Sb
 
4
S
 
10
5.7.34Schirmerite
AgPb
 
2
Bi
 
3
S
 
7
5.7.36Gustavite
Ag
 
3
Pb
 
5
Bi
 
11
S
 
24
5.7.37Kitaibelite
Ag
 
10
PbBi
 
30
S
 
51
5.7.38Treasurite
Ag
 
7
Pb
 
6
Bi
 
15
S
 
32
5.7.39Benjaminite
(Ag,Cu)
 
3
(Bi,Pb)
 
7
S
 
12
5.7.40Lengenbachite
(Ag,Cu)
 
2
Pb
 
6
As
 
4
S
 
13
5.7.41Berryite
Pb
 
3
(Ag,Cu)
 
5
Bi
 
7
S
 
16
5.7.42Neyite
Pb
 
7
(Cu,Ag)
 
2
Bi
 
6
S
 
17
5.7.44Cupropavonite
AgCu
 
2
PbBi
 
5
S
 
10
5.7.45Padĕraite
Cu
 
5.9
Ag
 
1.3
Pb
 
1.6
Bi
 
11.2
S
 
22
5.7.46Rayite
Pb
 
8
(Ag,Tl)
 
2
Sb
 
8
S
 
21
5.7.47Rathite
Pb
 
8
Pb
 
4-x
(Tl
 
2
As
 
2
)
 
x
(Ag
 
2
As
 
2
)As
 
16
S
 
40
5.7.48Hatchite
AgTlPbAs
 
2
S
 
5

Other Names for Larosite

Synonyms:
IMA1971-014
Other Languages:
German:Larosit
Spanish:Larosita

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 Larosite

Reference List:Canadian Mineralogist (1973): 11: 886-891.

American Mineralogist (1974): 59: 382.

Internet Links for Larosite

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  • Larosite details from Handbook of Mineralogy (PDF)
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    Localities for Larosite

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    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
     
    • Ontario
      • Timiskaming District
        • Cobalt-Gowganda region
    		[www.ontariominerals.com]
        • Coleman Township
          • Glen Lake
    		Can.Min.(1972) 11, 886-891 (and p. 209); Dana 7:I:343.
    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: 10th Nov 2009 17:59:00