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Scainiite

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Buca della Vena Mine, Stazzema, Apuan Alps, Lucca Province, Tuscany, Italy
© Cristian B.

Show Scainiite Photos (10)
Formula:
Pb
 
14
Sb
 
30
S
 
54
O
 
5
System:MonoclinicColour:Black, bluish metallic ...
Lustre:Metallic
Name:For Dr. Giuseppe Scaini (1906-1988), engineer and skilful investigator of systematic and italian mineralogy.
This page provides mineralogical data about Scainiite.

Classification of Scainiite

IMA status:Approved 1997
Strunz 8th edition ID:2/E.26-
Nickel-Strunz 10th (pending) edition ID:2.JB.35

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb
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Type Occurrence of Scainiite

Type Locality:Buca della Vena Mine, Stazzema, Apuan Alps, Lucca Province, Tuscany, Italy
General Appearance of Type Material:Acicular crystals, elongated [010], black in colour with bluish metallic luster. The bluish colour apparently arises from a superficial very low hydrothermal alteration of the crystals.
Place of Conservation of Type Material:Museo di Storia Naturale e del Territorio, Pisa University, Italy Catalogue numbers: 15521, 15522, 15523.
Musée de l'Ecole des Mines de Paris, France.
Geological Setting of type material:Late extensional calcite veins embedded in the dolomitic limestones.

Physical Properties of Scainiite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Black, bluish metallic with dark red tint
Hardness (Vickers):VHN100=192
Hardness Data:Measured
Tenacity:Brittle
Fracture:Irregular/Uneven
Density (calculated):5.56 g/cm3

Crystallography of Scainiite

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 = 52Å, b = 8.148Å, c = 24.31Å
β = 104.09°
Ratio:a:b:c = 6.382 : 1 : 2.984
Unit Cell Volume:V 9991 ų
Z:4
X-Ray Powder Diffraction:
d-spacingIntensity
4.039 (13)
3.773 (11)
3.706 (4)
3.622 (11)
3.472 (100)
3.441 (18)
3.041 (35)
2.956 (54)
2.827 (20)
2.706 (8)
2.628 (8)
2.441 (5)
2.356 (5)
2.296 (7)
2.228 (22)
2.100 (2)
2.052 (46)
2.006 (8)
1.973 (8)
1.947 (129
1.898 (9)
1.867 (6)
Comments:d and I observed. Gandolfi camera, diameter 114.6 mm.

Optical Data of Scainiite

Type:Anisotropic
Anisotropism:weak
Bireflectance:weak
Internal Reflections:rare red internal reflections

Chemical Properties of Scainiite

Formula:
Pb
 
14
Sb
 
30
S
 
54
O
 
5
Essential elements:O, Pb, S, Sb
All elements listed in formula:O, Pb, S, Sb

Relationship of Scainiite 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.25Junoite
Cu
 
2
Pb
 
3
Bi
 
8
(S,Se)
 
16
2.JB.25Nordströmite
CuPb
 
3
Bi
 
7
(Se
 
4
S
 
10
)
2.JB.25Proudite
CuPb
 
7.5
Bi
 
9.33
(S,Se)
 
22
2.JB.25Felbertalite
Cu
 
2
Pb
 
6
Bi
 
8
S
 
19
2.JB.30Geocronite
Pb
 
14
(Sb,As)
 
6
S
 
23
2.JB.30Jordanite
Pb
 
14
(As,Sb)
 
6
S
 
23
2.JB.30Kirkiite
Pb
 
10
Bi
 
3
As
 
3
S
 
19
2.JB.35Pillaite
Pb
 
9
Sb
 
10
S
 
23
ClO
 
0.5
2.JB.35Zinkenite
Pb
 
9
Sb
 
22
S
 
42
2.JB.35Pellouxite
(Cu,Ag)Pb
 
10
Sb
 
12
S
 
27
O(Cl,S)
 
0.6
2.JB.40Andorite
PbAgSb
 
3
S
 
6
2.JB.40Aschamalmite
Pb
 
6
Bi
 
2
S
 
9
2.JB.40Eskimoite
Ag
 
7
Pb
 
10
Bi
 
15
S
 
36
2.JB.40Fizélyite
Pb
 
14
Ag
 
5
Sb
 
21
S
 
48
 ?
2.JB.40Gustavite
Ag
 
3
Pb
 
5
Bi
 
11
S
 
24
2.JB.40Lillianite
Pb
 
3
Bi
 
2
S
 
6
2.JB.40Ourayite
Ag
 
3
Pb
 
4
Bi
 
5
S
 
13
2.JB.40Ramdohrite
Ag
 
3
Pb
 
6
Sb
 
11
S
 
24
2.JB.40Roshchinite
Ag
 
19
Pb
 
10
Sb
 
51
S
 
96
2.JB.40Schirmerite
AgPb
 
2
Bi
 
3
S
 
7
2.JB.40Treasurite
Ag
 
7
Pb
 
6
Bi
 
15
S
 
32
2.JB.40Uchucchacuaite
AgMnPb
 
3
Sb
 
5
S
 
12
2.JB.40Vikingite
Ag
 
5
Pb
 
8
Bi
 
13
S
 
30
2.JB.40Xilingolite
Pb
 
3
Bi
 
2
S
 
6
2.JB.40Heyrovskýite
Pb
 
10
AgBi
 
5
S
 
18
2.JB.40Andorite IV
Pb
 
18
Ag
 
15
Sb
 
47
S
 
96
2.JB.40Andorite VI
PbAgSb
 
3
S
 
6
2.JB.45Galenobismutite
PbBi
 
2
S
 
4
2.JB.45Weibullite
Pb
 
5
Bi
 
8
Se
 
7
S
 
11
2.JB.45Angelaite
Cu
 
2
AgPbBiS
 
4
2.JB.50Neyite
Pb
 
7
(Cu,Ag)
 
2
Bi
 
6
S
 
17
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 Scainiite

Synonyms:
IMA1996-014Scainite
German names:
Scainit
Russian names:
Скайнит
Spanish names:
Scainita

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 Scainiite

Reference List:-Orlandi P., Moëlo Y., Meerschaut A., Palvadeau P. (1999). Lead-antimony sulfosalts from Tuscany (Italy). I. Scainiite, Pb^14Sb^30S^54O^5, the first Pb-Sb oxy-sulfosalt, from Buca della Vena mine, European Journal of Mineralogy: 11: 949-954.

European Journal of Mineralogy: 12: 835-846.

Zeitschrift für Kristallographie: 173: 1-23.

Internet Links for Scainiite

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

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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.
    Italy
     
    • Tuscany
      • Lucca Province
        • Apuan Alps
          • Stazzema
    		Orlandi P., Moëlo Y., Meerschaut A., Palvadeau P. (1999): Lead-antimony sulfosalts from Tuscany (Italy): I. Scainiite, Pb14Sb30S54O5, the first Pb-Sboxy-sulfosalt, from Buca della Vena mine., European Journal of Mineralogy 11, 949-954
    Slovakia
     
    • Žilina Region
      • Northern Low Tatra Mts
    Mineral and/or Locality
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