Dadsonite
A valid IMA mineral species
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About Dadsonite
Formula:
Pb23Sb25S60Cl
Colour:
Lead grey
Lustre:
Metallic
Hardness:
2½
Specific Gravity:
5.68
Crystal System:
Triclinic
Name:
Named in 1969 by John Leslie Jambor in honor of Alexander Stewart Dadson (1906, Canada - 1958, Canada), exploration geologist and mineralogist who made significant contributions to the mining development of the Giant Mine.
Co-Type Localities:
ⓘ Giant Yellowknife Mine (Giant Mine), Yellowknife, North Slave Region, Northwest Territories, Canada
ⓘ Taylor Pit, Huntingdon Township, Centre Hastings Municipality, Hastings County, Ontario, Canada
ⓘ Graf Jost-Christian Mine, Wolfsberg, Sangerhausen, Mansfeld-Südharz, Saxony-Anhalt, Germany
ⓘ Red Bird Mine, Antelope Springs Mining District, Pershing County, Nevada, USA
ⓘ Taylor Pit, Huntingdon Township, Centre Hastings Municipality, Hastings County, Ontario, Canada
ⓘ Graf Jost-Christian Mine, Wolfsberg, Sangerhausen, Mansfeld-Südharz, Saxony-Anhalt, Germany
ⓘ Red Bird Mine, Antelope Springs Mining District, Pershing County, Nevada, USA
A Cl-free homeotype is disulfodadsonite. Rare example of lead chlorosulfoantimonite. Chemically related to ardaite; compare also 'UM1980-08-S:ClPbSb', 'UM1980-09-S:ClPbSb', and 'UM1980-10-S:ClPbSb'.
Unique Identifiers
Mindat ID:
1213
Long-form identifier:
mindat:1:1:1213:9
GUID
(UUID V4):
(UUID V4):
bd6acd9b-0e69-49f8-87c4-6ecd32b960c7
IMA Classification of Dadsonite
Approved
Approval year:
1968
First published:
1969
Classification of Dadsonite
2.HC.30
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb
3.6.8.1
3 : SULFOSALTS
6 : 2 < ø < 2.49
3 : SULFOSALTS
6 : 2 < ø < 2.49
6.5.9
6 : Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
5 : Sulphohalides
6 : Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
5 : Sulphohalides
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Dad | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Dadsonite
Metallic
Transparency:
Opaque
Colour:
Lead grey
Streak:
Black
Hardness:
2½ on Mohs scale
Hardness:
VHN15=226 - 279 kg/mm2 - Vickers
Density:
5.68 g/cm3 (Measured) 5.51 g/cm3 (Calculated)
Optical Data of Dadsonite
Anisotropism:
Strong to distinct in greenish gray
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
400nm | 44.0% | 46.6% |
420nm | 42.3% | 45.8% |
440nm | 40.8% | 45.1% |
460nm | 39.6% | 44.5% |
480nm | 39.2% | 44.1% |
500nm | 39.1% | 44.0% |
520nm | 39.1% | 44.0% |
540nm | 39.1% | 43.9% |
560nm | 38.9% | 43.0% |
580nm | 38.4% | 42.0% |
600nm | 37.9% | 41.3% |
620nm | 37.3% | 40.6% |
640nm | 36.8% | 39.9% |
660nm | 36.2% | 39.1% |
680nm | 35.7% | 38.1% |
700nm | 35.3% | 37.1% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 46.6%.
R1 shown in black, R2 shown in red
Colour in reflected light:
White with greenish tint
Internal Reflections:
Blood red in oil
Chemistry of Dadsonite
Mindat Formula:
Pb23Sb25S60Cl
Elements listed:
Common Impurities:
As,(Fe)
Crystallography of Dadsonite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 8.276(2) Å, b = 17.392(4) Å, c = 19.505(4) Å
α = 83.527(7)°, β = 77.882(8)°, γ = 89.125(8)°
α = 83.527(7)°, β = 77.882(8)°, γ = 89.125(8)°
Ratio:
a:b:c = 0.476 : 1 : 1.121
Unit Cell V:
2727.2 ų
Z:
1
Morphology:
Acicular needles.
Comment:
Originally assumed to be monoclinic, with a = 19.041, b = 8.226, c = 17.327 A, beta = 96.30°. Desymmetrized OD structure with profuse twinning.
Crystal Structure
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2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0006133 | Dadsonite | Makovicky E, Topa D, Mumme W G (2006) The crystal structure of dadsonite The Canadian Mineralogist 44 1499-1512 | 2006 | Low Tatra Mountains, Slovakia | 0 | 293 | |
0006134 | Dadsonite | Makovicky E, Topa D, Mumme W G (2006) The crystal structure of dadsonite The Canadian Mineralogist 44 1499-1512 | 2006 | Low Tatra Mountains, Slovakia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.795 Å | (100) |
2.069 Å | (92) |
3.393 Å | (74) |
3.371 Å | (72) |
3.713 Å | (51) |
2.843 Å | (47) |
3.792 Å | (45) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Geological Setting:
Hydrothermal veins.
Type Occurrence of Dadsonite
Co-Type Localities:
ⓘ Giant Yellowknife Mine (Giant Mine), Yellowknife, North Slave Region, Northwest Territories, Canada
ⓘ Taylor Pit, Huntingdon Township, Centre Hastings Municipality, Hastings County, Ontario, Canada
ⓘ Graf Jost-Christian Mine, Wolfsberg, Sangerhausen, Mansfeld-Südharz, Saxony-Anhalt, Germany
ⓘ Red Bird Mine, Antelope Springs Mining District, Pershing County, Nevada, USA
ⓘ Taylor Pit, Huntingdon Township, Centre Hastings Municipality, Hastings County, Ontario, Canada
ⓘ Graf Jost-Christian Mine, Wolfsberg, Sangerhausen, Mansfeld-Südharz, Saxony-Anhalt, Germany
ⓘ Red Bird Mine, Antelope Springs Mining District, Pershing County, Nevada, USA
General Appearance of Type Material:
Needles and fibrous crystals, resembling steel wool. Individual needles are generally multiple crystals with a length of up to 2 mm, but a thickness of less than 0.1 mm. The needles are striated parallel to the elongation.
Place of Conservation of Type Material:
Canadian Geological Survey, Ottawa, Ontario, Canada.
Royal Ontario Museum, Toronto, Ontario, Canada, number M30905.
National School of Mines, Paris, France.
The Natural History Museum, London, England, number 1972,11.
National Museum of Natural History (Smithsonian), Washington, D.C., USA, number 123240.
Royal Ontario Museum, Toronto, Ontario, Canada, number M30905.
National School of Mines, Paris, France.
The Natural History Museum, London, England, number 1972,11.
National Museum of Natural History (Smithsonian), Washington, D.C., USA, number 123240.
Associated Minerals at Type Locality:
Reference:
Jambor, J.L. (1969) Dadsonite (minerals Q and QM), a new lead sulphantimonide. Mineralogical Magazine: 37: 437-441.
Synonyms of Dadsonite
Plumosite (in part)
Other Language Names for Dadsonite
Common Associates
Associated Minerals Based on Photo Data:
15 photos of Dadsonite associated with Siderite | FeCO3 |
4 photos of Dadsonite associated with Chalcostibite | CuSbS2 |
4 photos of Dadsonite associated with Zinkenite | Pb9Sb22S42 |
3 photos of Dadsonite associated with Boulangerite | Pb5Sb4S11 |
3 photos of Dadsonite associated with Bindheimite | Pb2Sb2O6O |
1 photo of Dadsonite associated with Quartz | SiO2 |
1 photo of Dadsonite associated with Calcite | CaCO3 |
1 photo of Dadsonite associated with Gypsum | CaSO4 · 2H2O |
Related Minerals - Strunz-mindat Grouping
2.HC. | Bernarlottiite | Pb6(As5Sb3)S18 |
2.HC.05b | Argentobaumhauerite | Ag1.5Pb22As33.5S72 |
2.HC.05b | Baumhauerite | Pb12As16S36 |
2.HC.05d | Dufrénoysite | Pb2As2S5 |
2.HC.05a | Guettardite | Pb8(Sb0.56As0.44)16S32 |
2.HC.05c | Liveingite | Pb9As13S28 |
2.HC.05f | Parapierrotite | TlSb5S8 |
2.HC.05f | Pierrotite | Tl2(Sb,As)10S16 |
2.HC.05d | Rathite | Ag2Pb12-xTlx/2As18+x/2S40 |
2.HC.05a | Sartorite | PbAs2S4 |
2.HC.05a | Twinnite | Pb0.8Tl0.1Sb1.3As0.8S4 |
2.HC.05d | Veenite | Pb16Sb9-xAs7+xS40, x ~ 0-0.5 |
2.HC.05g | Marumoite | Pb32As40S92 |
2.HC.05d | Rathite-IV | PbAs2S4 |
2.HC.05f | Philrothite | TlAs3S5 |
2.HC.05h | Polloneite | AgPb46As26Sb23S120 |
2.HC.05e | Heptasartorite | Tl7Pb22As55S108 |
2.HC.05e | Hendekasartorite | Tl2Pb48As82S172 |
2.HC.05e | Écrinsite | AgTl3Pb4As11Sb9S36 |
2.HC.05b | Baumhauerite II | |
2.HC.05c | Argentoliveingite | Ag3+xPb36-2xAs51+xS112 |
2.HC.05e | Incomsartorite | Tl6Pb144As246S516 |
2.HC.05d | Argentodufrénoysite | Ag3Pb26As35S80 |
2.HC.05a | Hyršlite | Pb8As10Sb6S32 |
2.HC.05e | Dekatriasartorite | TlPb58As97S204 |
2.HC.10a | Fülöppite | Pb3Sb8S15 |
2.HC.10c | Heteromorphite | Pb7Sb8S19 |
2.HC.10b | Plagionite | Pb5Sb8S17 |
2.HC.10d | Rayite | Pb8(Ag,Tl)2Sb8S21 |
2.HC.10d | Semseyite | Pb9Sb8S21 |
2.HC.15 | Boulangerite | Pb5Sb4S11 |
2.HC.15 | Falkmanite | Pb3Sb2S6 |
2.HC.20 | Robinsonite | Pb4Sb6S13 |
2.HC.25 | Moëloite | Pb6Sb6S14(S3) |
2.HC.35 | Owyheeite | Ag3Pb10Sb11S28 |
2.HC.35 | Zoubekite | AgPb4Sb4S10 |
2.HC.40 | Parasterryite | Ag4Pb20Sb14As10S58 |
2.HC.50 | Lopatkaite | Pb5Sb3AsS11 |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Dadsonite
mindat.org URL:
https://www.mindat.org/min-1213.html
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References for Dadsonite
Reference List:
Coleman, L. C. (1953) Mineralogy of the Yellowknife Bay Area, N. W. T. American Mineralogist, 38 (5-6) 506-527
Jambor, John Leslie (1967) New lead sulfantimonides from Madoc, Ontario. Part 1. The Canadian Mineralogist, 9 (1) 7-24
Jambor, John Leslie (1967) New lead sulfantimonides from Madoc, Ontario. Part 2 - mineral descriptions. The Canadian Mineralogist, 9 (2) 191-213
Jambor, John Leslie (1968) New lead sulfantimonides from Madoc, Ontario. Part 3-syntheses, paragenesis, origin. The Canadian Mineralogist, 9 (4) 505-521
Makovicky, Emil, Topa, Dan, Mumme, William G. (2006) The crystal structure of dadsonite. The Canadian Mineralogist, 44 (6) 1499-1512 doi:10.2113/gscanmin.44.6.1499
Moëlo, Yves, Makovicky, Emil, Mozgova, Nadejda N., Jambor, John L., Cook, Nigel, Pring, Allan, Paar, Werner, Nickel, Ernest H., Graeser, Stephan, Karup-Møller, Sven, Balic-unic, Tonči, Mumme, William G., Vurro, Filippo, Topa, Dan (2008) Sulfosalt systematics: a review. Report of the sulfosalt sub-committee of the IMA Commission on Ore Mineralogy. European Journal of Mineralogy, 20 (1) 7-62 doi:10.1127/0935-1221/2008/0020-1778
Kaden, R., Wagner, G., Bente, K. (2012) Crystal chemistry and electrical conductivity of boulangerite, dadsonite and iodine-substituted pillaite grown by chemical vapor transport. The Canadian Mineralogist, 50 (2) 219-233 doi:10.3749/canmin.50.2.219
Localities for Dadsonite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Canada (TL) | |
| Coleman (1953) +4 other references |
| Jambor (1967) +3 other references |
China | |
| Mineral Deposits 4 (1) |
France | |
| "La chalcostibite et la dadsonite de Saint Pons et al. (1979) |
| "La chalcostibite et la dadsonite de Saint Pons et al. (1979) |
Cervelle et al. (1979) +1 other reference | |
Germany (TL) | |
| JAMBOR (1969) |
Greece | |
| 62. +1 other reference |
Hanke (1998) | |
Italy | |
| Orlandi et al. (2009) |
| Orlandi P. (Alpi Apuane, Toscana, Italia) +1 other reference |
Slovakia | |
| Martin Števko-unpublished |
| Martin Števko-unpublished |
| Sejkora J. & Kouřimský J. |
| Makovicky et al. (2006) +2 other references |
Spain | |
| Analyzed by XRD by Dr. Joan Vinals (Barcelona) |
USA (TL) | |
| Berry et al. (1952) +2 other references |
Uzbekistan | |
| Kovalenker et al. (1997) |
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Saint-Pons outcrops, Barcelonnette, Alpes-de-Haute-Provence, Provence-Alpes-Côte d'Azur, France