Suredaite Mineral Data

Suredaite Mineral Data

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General Suredaite Information

Chemical Formula:

PbSnS3

Composition:

Molecular Weight = 390.35 gm

Silver 1.38 % Ag

Tin 30.41 % Sn

Arsenic 1.92 % As

Lead 42.46 % Pb

Sulfur 23.82 % S

______

100.00 %

Empirical Formula:

Pb_0.8Ag_0.05SnAs_0.1S_2.9

Environment:

Stockwork mineralization in Ag-Sn mineral belt.

IMA Status:

Approved IMA 1998 (Dana # Added)

Locality:

Oploca vein system in the SW corner of the Pirquitas Ag-Sn deposti, NW Argentina. Link to MinDat.org Location Data.

Name Origin:

The name honors R. J. Sureda Leston, head of the Department of Mineralogy end Economic Geology, University of Salta, Argentina.

Synonym:

ICSD 89709

IMA1997-043

PDF 23-1168

Suredaite Image

Images:

Suredaite

Comments: Silvery metallic columnar suredaite in matrix.
Location: Pirquitas Mine, Jujuy, Argentina. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Suredaite

Comments: BSE image of a large zoned crystal of suredaite, chemically SU-3, surrounded (replaced) by SU-2. White is skeletal galena. (AmMin 85:1068).
Location: Pirquitas Ag-Sn deposit (Province Jujuy, NW-Argentina). Scale: See Image.
© American Mineralogist

Suredaite Crystallography

Axial Ratios:

a:b:c =2.3383:1:3.7127

Cell Dimensions:

a = 8.8221, b = 3.7728, c = 14.0076, Z = 4; V = 466.23 Den(Calc)= 5.56

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.128(1)(103), 1.9335(0.54)(314), 2.6692(0.51),2.8081(0.51)(211), 2.7421(0.409)(204), 1.6316(0.389)(124), 3.73(0.3)(202), 3.1085(0.276)(112), 1.3754(0.265)(309),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Paar W H , Miletich R , Topa D , Criddle A J , De Brodtkorb M K , Amthauer G , Tippelt G , American Mineralogist , 85 (2000) p.1066-1075, Suredaite, PbSnS3, a new mineral species, from the Pirquitas Ag-Sn deposit,, NW-Argentina: Mineralogy and crystal structure

Physical Properties of Suredaite

Cleavage:

[001] Perfect, [101] Perfect, [100] Perfect

Color:

Grayish black.

Density:

5.54 - 5.88, Average = 5.71

Diaphaniety:

Opaque

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Metallic

Streak:

black

Optical Properties of Suredaite

Optical Data:

NCalc= 1.62 - from Gladstone-Dale relationship (KC = 0.1116) where Ncalc=Dcalc*KC+1
NCalc= 1.64 - from Gladstone-Dale relationship (KC = 0.1116) where Ncalc=Dmeas*KC+1

RL Anisotrophism:

Rotation tints of metallic blue to mauve to brown.

RL Bireflectance:

Not apparent.

RL Color:

White.

RL Pleochroism:

Not apparent.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Suredaite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	35.60	37.90
420 nm	35.50	37.50
440 nm	35.00	36.90
460 nm	34.30	36.30
480 nm	33.60	35.60
500 nm	32.90	34.80
520 nm	32.20	33.90
540 nm	31.50	33.10
560 nm	30.80	32.30
580 nm	30.30	31.70
600 nm	29.70	31.10
620 nm	29.30	30.70
640 nm	29.00	30.20
660 nm	28.70	29.80
680 nm	28.40	29.40
700 nm	28.40	29.30

**Standardized Intensity (100%) Reflection Spectra of Suredaite in Oil**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	21.30	22.40
420 nm	20.50	21.80
440 nm	19.80	21.20
460 nm	19.10	20.60
480 nm	18.50	19.90
500 nm	17.80	19.00
520 nm	17.20	18.40
540 nm	16.60	17.60
560 nm	16.10	17.00
580 nm	15.50	16.50
600 nm	15.20	16.00
620 nm	14.80	15.60
640 nm	14.50	15.20
660 nm	14.30	14.90
680 nm	14.00	14.60
700 nm	13.80	14.50

**Calculated Relative Intensity Colors of Suredaite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	300%
R₁
R₂

**Calculated Relative Intensity Colors of Suredaite in Oil**
Relative Intensity	0%	60%	100%	120%	180%	240%	300%	360%	420%	480%	540%	570%
R₁
R₂

Calculated Properties of Suredaite

Electron Density:

r_electron=4.78 gm/cc
note: r_Suredaite=5.56 gm/cc.

Fermion Index

Fermion Index = 0.14617
Boson Index = 0.85383

Photoelectric:

PE_Suredaite= 862.93 barns/electron
U=PE_Suredaite x r_electron=4,121.29 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Suredaite is Not Radioactive

Suredaite Classification

Dana Class:

2.4.21.1 (2)Sulfides - Including Selenides and Tellurides

(2.4)where Am Bn Xp, with (m+n):p=2:1

(2.4.21)Dana Group

2.4.21.1 Suredaite ! PbSnS3 P nma 2/m 2/m 2/m

Strunz Class:

II/C.17-45 II - Sulfides and sulphosalts

II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1

II/C.17 - Hertzenbergite - Kylindrite series

II/C.17-10 Herzenbergite SnS Pbnm 2/m 2/m 2/m

II/C.17-20 Stistaite SnSb R 3m 3 2/m

II/C.17-30 Mohite Cu2SnS3 P1 1

II/C.17-40 Teallite PbSnS2 Pbnm 2/m 2/m 2/m

II/C.17-45 Suredaite PbSnS3 P nma 2/m 2/m 2/m

II/C.17-50 Potosiite Pb6Sn2FeSb2S14 P 1 ? 1

II/C.17-55 Levyclaudite Pb8Sn7Cu3(Bi,Sb)3S28 A2 ? 2

II/C.17-60 Incaite Pb4Sn4FeSb2S15 P1 ? 1

II/C.17-70 Franckeite (Pb,Sn)6FeSn2Sb2S14 P1 1

II/C.17-80 Cylindrite Pb3Sn4FeSb2S14 P1 1

Other Suredaite Information

References:

NAME( AmMin, 85:1066) PHYS. PROP.(AmMin, 85:1066) OPTIC PROP.(AmMin, 85:1066)

See Also:

Links to other databases for Suredaite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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Print or Cut-and-Paste your Suredaite Specimen Label here :

Suredaite

PbSnS3
Dana No: 2.4.21.1 Strunz No: II/C.17-45
Locality:

Notes: