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Ángelaite

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Formula:
Cu
 
2
AgPbBiS
 
4
System:Orthorhombic
Name:Named for type locality, Mina Ángela.


Homeotype of galenobismutite.

Originally called "angelaite" (without accent); renamed in 2010 (IMA 10-D).

Classification of Ángelaite

IMA status:Renamed approved 2010
Strunz 8th edition ID:2/E.0-
Nickel-Strunz 10th (pending) edition ID:2.JB.25f

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb
Dana 8th edition ID:3.1.5.2

3 : SULFOSALTS
1 : ø > 4
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Type Occurrence of Ángelaite

Type Locality:Angela mine, Los Manantiales District, Gastre, Chubut, Argentina
General Appearance of Type Material:inclusions in galena
Geological Setting of type material:epithermal gold ore in volcanic rock
Associated Minerals at type locality:
WitticheniteTelluriumSphaleriteSilverPyrite
MiharaiteMatilditeHematiteGoldGalena
ElectrumChalcopyriteCervelleiteBorniteBetekhtinite
ArsenopyriteAikinite

Crystallography of Ángelaite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pnma {P21/n 21/m 21/a}
Cell Parameters:a = 12.734(5) Å, b = 4.032(1) Å, c = 14.633(5) Å
Ratio:a:b:c = 3.158 : 1 : 3.629
Unit Cell Volume:V 751.2 ų
Z:4
Comment:Originally reported as monoclinic-pseudoorthorhombic.

Chemical Properties of Ángelaite

Formula:
Cu
 
2
AgPbBiS
 
4
Essential elements:Ag, Bi, Cu, Pb, S
All elements listed in formula:Ag, Bi, Cu, Pb, S
Analytical Data:Average of 23 microprobe analyses
Cu (15.93)
Ag (13.48)
Pb (27.53)
Bi (26.79)
S (16.39)
Empirical Formula:
Cu
 
1
 · 96 Ag
 
0
 · 98 Pb
 
1
 · 04 Bi
 
1
 · 01 S
 
4
 · 01

Relationship of Ángelaite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.JB.05Diaphorite
Ag
 
3
Pb
 
2
Sb
 
3
S
 
8
2.JB.10Cosalite
Pb
 
2
Bi
 
2
S
 
5
2.JB.15Freieslebenite
AgPbSbS
 
3
2.JB.15Marrite
AgPbAsS
 
3
2.JB.20Cannizzarite
Pb
 
4
Bi
 
6
S
 
13
2.JB.20Wittite
Pb
 
9
Bi
 
12
(S,Se)
 
27
2.JB.25aJunoite
Cu
 
2
Pb
 
3
Bi
 
8
(S,Se)
 
16
2.JB.25iNeyite
Ag
 
2
Cu
 
6
Pb
 
25
Bi
 
26
S
 
68
2.JB.25cNordströmite
CuPb
 
3
Bi
 
7
(Se
 
4
S
 
10
)
2.JB.25gNuffieldite
Pb
 
2
Cu(Pb,Bi)Bi
 
2
S
 
7
2.JB.25dProudite
CuPb
 
7.5
Bi
 
9.33
(S,Se)
 
22
2.JB.25hWeibullite
Pb
 
5
Bi
 
8
Se
 
7
S
 
11
2.JB.25bFelbertalite
Cu
 
2
Pb
 
6
Bi
 
8
S
 
19
2.JB.25jRouxelite
Cu
 
2
HgPb
 
23
Sb
 
27
S
 
65.5
2.JB.25iCuproneyite
Cu
 
7
Pb
 
27
Bi
 
25
S
 
68
2.JB.30aGeocronite
Pb
 
14
(Sb,As)
 
6
S
 
23
2.JB.30aJordanite
Pb
 
14
(As,Sb)
 
6
S
 
23
2.JB.30bKirkiite
Pb
 
10
Bi
 
3
As
 
3
S
 
19
2.JB.30cTsugaruite
Pb
 
4
As
 
2
S
 
7
2.JB.35cPillaite
Pb
 
9
Sb
 
10
S
 
23
ClO
 
0.5
2.JB.35aZinkenite
Pb
 
9
Sb
 
22
S
 
42
2.JB.35bScainiite
Pb
 
14
Sb
 
30
S
 
54
O
 
5
2.JB.35dPellouxite
(Cu,Ag)Pb
 
10
Sb
 
12
S
 
27
O(Cl,S)
 
0.6
2.JB.40bAschamalmite
Pb
 
6
Bi
 
2
S
 
9
2.JB.40aBursaite
Pb
 
5
Bi
 
4
S
 
11
2.JB.40bEskimoite
Ag
 
7
Pb
 
10
Bi
 
15
S
 
36
2.JB.40aFizélyite
Ag
 
5
Pb
 
14
Sb
 
21
S
 
48
2.JB.40aGustavite
Ag
 
3
Pb
 
5
Bi
 
11
S
 
24
2.JB.40aLillianite
Pb
 
3
Bi
 
2
S
 
6
2.JB.40cOurayite
Ag
 
3
Pb
 
4
Bi
 
5
S
 
13
2.JB.40aRamdohrite
(Cd,Mn,Fe)Ag
 
5.5
Pb
 
12
Sb
 
21.5
S
 
48
2.JB.40aRoshchinite
Ag
 
19
Pb
 
10
Sb
 
51
S
 
96
2.JB.40dSchirmerite
AgPb
 
2
Bi
 
3
S
 
7
2.JB.40aTreasurite
Ag
 
7
Pb
 
6
Bi
 
15
S
 
32
2.JB.40aUchucchacuaite
AgMnPb
 
3
Sb
 
5
S
 
12
2.JB.40eUstarasite
Pb(Bi,Sb)
 
6
S
 
10
 (?)
2.JB.40aVikingite
Ag
 
5
Pb
 
8
Bi
 
13
S
 
30
2.JB.40aXilingolite
Pb
 
3
Bi
 
2
S
 
6
2.JB.40bHeyrovskýite
Pb
 
10
AgBi
 
5
S
 
18
2.JB.40UM1988-05-S:AgBiCuHgPb
(Hg,Ag,Cu,Pb)
 
5
Pb
 
5
Bi
 
11
S
 
27
2.JB.40UM1988-06-S:AgBiCuHgPb
(Pb,Hg)
 
12
(Cu,Ag)
 
3
(Bi,Sb)
 
10
(S,Te)
 
27
2.JB.40aAndorite IV
Pb
 
18
Ag
 
15
Sb
 
47
S
 
96
2.JB.55Gratonite
Pb
 
9
As
 
4
S
 
15
2.JB.60Marrucciite
Hg
 
3
Pb
 
16
Sb
 
18
S
 
46
2.JB.65Vurroite
Pb
 
20
Sn
 
2
(Bi,As)
 
22
S
 
54
Cl
 
6

Other Names for Ángelaite

Synonyms:
AngelaiteIMA2003-064
Other Languages:
German:Angelait

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 Ángelaite

Reference List:

- +
Topa, D., Makovicky, E., Paar, W., Brodtkorb, M. (2004): The crystal structure of Angelaite, Cu2AgPbBiS4, a new mineral species from Angela mine, Province of Chubut, Argentina. 32nd IGC - Florence, 2004.

Brodtkorb, M.K. & W. Paar (2004): Angelaita en la paragenesis del distrito Los Manantiales, provincia del Chubut: Una nueva especie mineral: Revista de la Associacion Geologica Argentina, 59(4), 787-789.

Dan Topa, Werner H. Paar, Hubert Putz, Georg Zagler, Milka K. de Brodtkorb, Chris J. Stanley, Andrew C. Roberts, and Emil Makovicky (2010): Mineralogical data on angelaite, Cu2AgPbBiS4, from the Los Manantiales District, Chubut, Argentina. Can. Mineral. 48, 139-144.

Topa, D., Makovicky, E., Putz, H. (2010): The crystal structure of angelaite, Cu2AgPbBiS4. Can. Mineral. 48, 145-153.

Internet Links for Ángelaite

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    • Localities for Ángelaite

    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.
    Argentina
     
    • Chubut
      • Gastre
        • Los Manantiales District
    		Topa, D., Makovicky, E., Paar, W., Brodtkorb, M. (2004): The crystal structure of Angelaite, Cu2AgPbBiS4, a new mineral species from Angela mine, Province of Chubut, Argentina. 32nd IGC - Florence, 2004.; Dan Topa, Werner H. Paar, Hubert Putz, Georg Zagler, Milka K. de Brodtkorb, Chris J. Stanley, Andrew C. Roberts, and Emil Makovicky (2010) Mineralogical data on angelaite, Cu 2 AgPbBiS 4 , from the Los Manantiales district, Chubut, Argentina. The Canadian Mineralogist (February 2010), 48(1):139-144
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