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|System:||Orthorhombic||Colour:||White to colourless to ...|
|Name:||Named in 1893 by William Frederick Petterd after the type locality, Dundas, Tasmania, Australia.|
Dundasite is a secondary lead mineral found in the oxidization zone of lead deposits.
Classification of Dundasite
|IMA status:||Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"|
|Strunz 8th edition ID:||5/E.08-90|
|Nickel-Strunz 10th (pending) edition ID:||5.DB.10|
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
B : With large and medium-sized cations
|Dana 8th edition ID:||16b.2.1.1|
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
2 : AmBn(XO3)pZq
|Hey's CIM Ref.:||11.9.3|
11 : Carbonates
9 : Carbonates of Pb, Zr and Th
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Type Occurrence of Dundasite
|Type Locality:||Adelaide Mine (Adelaide Pty Mine; Adelaide Proprietary Mine), Dundas mineral field, Zeehan District, Tasmania, Australia|
|Year of Discovery:||1893|
|Associated Minerals at type locality:|
Occurrences of Dundasite
|Geological Setting:||Oxidized zones of lead-bearing deposits.|
Physical Properties of Dundasite
|Colour:||White to colourless to very pale blue|
|Density (measured):||3.1 - 3.55 g/cm3|
|Density (calculated):||3.716 g/cm3|
Crystallography of Dundasite
|Class (H-M):||mmm (2/m 2/m 2/m) - Dipyramidal|
|Cell Parameters:||a = 9.08Å, b = 16.37Å, c = 5.62Å|
|Ratio:||a:b:c = 0.555 : 1 : 0.343|
|Unit Cell Volume:||V 835.35 Å³ (Calculated from Unit Cell)|
|Morphology:||Spherical aggregates composed of radiating crystals, elongated ; matted or felted crusts.|
|X-Ray Powder Diffraction:|
Optical Data of Dundasite
|RI values:||nα = 1.603 nβ = 1.716 nγ = 1.750|
|2V:||Measured: 30° to 40°, Calculated: 54°|
|Maximum Birefringence:||δ = 0.147|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Chemical Properties of Dundasite
|Simplified for copy/paste:||PbAl2(CO3)2(OH)4·H2O|
|Essential elements:||Al, C, H, O, Pb|
|All elements listed in formula:||Al, C, H, O, Pb|
Relationship of Dundasite to other Species
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Dundasite
|Other Information:||Soluble in acids with effervescence.|
|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 Dundasite
Petterd, William Frederick (1893) Minerals of Tasmania, Hobart: 66.
Prior (1906) Mineralogical Magazine: 14: 167.
Russell (1912) Mineralogical Magazine: 16: 272.
Russell (1944) Mineralogical Magazine: 27: 1.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 279-280.
Mineralogical Magazine: 14: 167-169.
Cocco, G., Fanfani, L., Nunzi, A. and Zanazzi, P. F. (1972): The crystal structure of dundasite. Mineral. Mag. 38, 564-569.
Internet Links for Dundasite
|Specimens:||The following Dundasite specimens are currently listed for sale on minfind.com.|
Localities for Dundasite
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.
(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.
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New Locality Added: Montagnana Valley, Genga, Ancona Province, Marche, ItalyFrom Giovanni Scapin, 20th Dec 2014 18:06:46