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Launayite

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Formula:
Pb
 
22
Sb
 
26
S
 
61
System:MonoclinicHardness:3½ - 4
Name:For French geologist Louis de Launay (1860-1938).
This page provides mineralogical data about Launayite.

Classification of Launayite

IMA status:Approved 1966
Strunz 8th edition ID:2/E.20-20
Nickel-Strunz 10th (pending) edition ID:2.LB.30

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:3.6.6.1

3 : SULFOSALTS
6 : 2 < ø < 2.49
Hey's CIM Ref.:5.6.11

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

Type Locality:Taylor Pit (Concession XIV; Lot 13), Huntingdon Township, Madoc Area, Hastings Co., Ontario, Canada
Year of Discovery:1966

Physical Properties of Launayite

Hardness (Mohs):3½ - 4

Crystallography of Launayite

Crystal System:Monoclinic
Cell Parameters:a = 42.58Å, b = 4.01Å, c = 32.16Å
β = 102.02°
Ratio:a:b:c = 10.618 : 1 : 8.02
Unit Cell Volume:V 5,370.79 ų (Calculated from Unit Cell)

Chemical Properties of Launayite

Formula:
Pb
 
22
Sb
 
26
S
 
61
Essential elements:Pb, S, Sb
All elements listed in formula:Pb, S, Sb
Common Impurities:As

Relationship of Launayite 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.30Madocite
Pb
 
17
Sb
 
16
S
 
41
2.LB.30Playfairite
Pb
 
16
Sb
 
18
S
 
43
2.LB.30Sorbyite
CuPb
 
9
(Sb,As)
 
11
S
 
26
2.LB.30Sterryite
Ag
 
2
Pb
 
10
(Sb,As)
 
12
S
 
29
2.LB.35Larosite
(Cu,Ag)
 
21
(Pb,Bi)
 
2
S
 
13
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:

- +
5.6.1Sartorite
PbAs
 
2
S
 
4
5.6.2Dufrénoysite
Pb
 
2
As
 
2
S
 
5
5.6.3Liveingite
Pb
 
9
As
 
13
S
 
28
5.6.4Baumhauerite
Pb
 
3
As
 
4
S
 
9
5.6.5Gratonite
Pb
 
9
As
 
4
S
 
15
5.6.6Jordanite
Pb
 
14
(As,Sb)
 
6
S
 
23
5.6.7Fülöppite
Pb
 
3
Sb
 
8
S
 
15
5.6.8Zinkenite
Pb
 
9
Sb
 
22
S
 
42
5.6.9Plagionite
Pb
 
5
Sb
 
8
S
 
17
5.6.10Heteromorphite
Pb
 
7
Sb
 
8
S
 
19
5.6.12Playfairite
Pb
 
16
Sb
 
18
S
 
43
5.6.13Semseyite
Pb
 
9
Sb
 
8
S
 
21
5.6.14Madocite
Pb
 
17
Sb
 
16
S
 
41
5.6.15Boulangerite
Pb
 
5
Sb
 
4
S
 
11
5.6.17Robinsonite
Pb
 
4
Sb
 
6
S
 
13
5.6.18Guettardite
Pb(Sb,As)
 
2
S
 
4
5.6.19Twinnite
Pb(Sb,As)
 
2
S
 
4
5.6.20Veenite
Pb
 
2
(Sb,As)
 
2
S
 
5
5.6.21Sorbyite
CuPb
 
9
(Sb,As)
 
11
S
 
26
5.6.22Geocronite
Pb
 
14
(Sb,As)
 
6
S
 
23
5.6.23Galenobismutite
PbBi
 
2
S
 
4
5.6.24Cosalite
Pb
 
2
Bi
 
2
S
 
5
5.6.25Cannizzarite
Pb
 
4
Bi
 
6
S
 
13
5.6.26Lillianite
Pb
 
3-2x
Ag
 
x
Bi
 
2+x
S
 
6
5.6.27Giessenite
Pb
 
27
Cu
 
2
(Bi,Sb)
 
19
S
 
57
5.6.28 Platynite
5.6.29Xilingolite
Pb
 
3
Bi
 
2
S
 
6
5.6.30Weibullite
Pb
 
5
Bi
 
8
Se
 
7
S
 
11
5.6.31Wittite
Pb
 
9
Bi
 
12
(S,Se)
 
27
5.6.32Kirkiite
Pb
 
10
Bi
 
3
As
 
3
S
 
19
5.6.33Ustarasite
Pb(Bi,Sb)
 
6
S
 
10
 (?)

Other Names for Launayite

Synonyms:
IMA1966-021
Other Languages:
German:Launayit
Spanish:Launayita

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 Launayite

Reference List:

- +
American Mineralogist (1968): 53: 1423.

Bulletin de la Société française de Minéralogie et de Cristallographie (1981): 104: 757-762.

Internet Links for Launayite

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    • Localities for Launayite

    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.
    Canada
     
    • Ontario
      • Hastings Co.
        • Madoc Area
          • Huntingdon Township
    		JAMBOR, J.L. (1967): New lead sulfantimonides from Madoc, Ontario. 1. Mineral descriptions. Canadian Mineralogist 9, 7-24. JAMBOR, J.L. (1967): New lead sulfantimonides from Madoc, Ontario. 2. Mineral descriptions. Canadian Mineralogist 9, 191-213. JAMBOR, J.L. (1968): New lead sulfantimonides from Madoc, Ontario. 3. Syntheses, paragenesis, origin. Canadian Mineralogist 10, 507-521. JAMBOR, J.L., LAFLAMME, J.H.G. & WALKER, D.A. (1982): A re-examination of the Madoc sulfosalts. Mineralogical Record 13, 93-100.
    Slovakia
     
    • Žilina Region
      • Liptovský Mikuláš Co.
    		Adamus B. et all.,1993: Launayit, nový minerál na ložisku Sb rúd Dúbrava v Nízkych Tatrách. Min.Slovaca,Bratislava, 25, 1, 73-74
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