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|Lustre:||Metallic||Hardness:||2½ - 3|
|Name:||From the Greek ετερος for "different" and μορφή "form" in allusion to a proposed dimorph.|
This mineral is an intermediate member of a homologous series. The thickness of a galena sheet in the structure determines the series member. A very rare mineral.
Feather ores ("plumosite" = jamesonite, boulangerite etc.) have often been mislabeled as heteromorphite; for discussion see http://www.mindat.org/forum.php?read,7,158675,158759#msg-158759
Classification of Heteromorphite
|IMA status:||Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"|
|Strunz 8th edition ID:||2/E.21-30|
|Nickel-Strunz 10th (pending) edition ID:||2.HC.10c|
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb
|Dana 8th edition ID:||18.104.22.168|
3 : SULFOSALTS
6 : 2 < ø < 2.49
|Hey's CIM Ref.:||5.6.10|
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
6 : Sulpharsenites etc. of Pb alone
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Type Occurrence of Heteromorphite
|Type Locality:||Caspari Mine, Uentrop, Arnsberg, Sauerland, North Rhine-Westphalia, Germany|
|Year of Discovery:||1849|
Physical Properties of Heteromorphite
|Hardness (Mohs):||2½ - 3|
|Density (measured):||5.73 g/cm3|
Crystallography of Heteromorphite
|Cell Parameters:||a = 13.6Å, b = 11.93Å, c = 21.22Å|
β = 90.83°
|Ratio:||a:b:c = 1.14 : 1 : 1.779|
|Unit Cell Volume:||V 3,442.54 Å³ (Calculated from Unit Cell)|
|Morphology:||Pyramidal, somewhat elongated in the direction of the pyramid edges. Striated and rounded parallel to [11¯0]. Often distorted or twisted and composed of subparallel individuals. Massive.|
Not a feather ore!!!
Chemical Properties of Heteromorphite
|Simplified for copy/paste:||Pb7Sb8S19|
|Essential elements:||Pb, S, Sb|
|All elements listed in formula:||Pb, S, Sb|
Relationship of Heteromorphite to other Species
|Member of:||Plagionite Group|
|Other Members of Group:|
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Heteromorphite
|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 Heteromorphite
Pisani (1876), C.R.: 83: 747.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 465-466.
Edenharter, A. (1980): Die Kristallstruktur von Heteromorphit,
Pb7Sb8S19. Zeitschrift für Kristallographie 151, 193-202 (in German).
Internet Links for Heteromorphite
Localities for Heteromorphite
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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Locality Updated: Wolf Rock, St Just District, Cornwall, England, UKFrom Peter Haas, 2nd Sep 2014 01:52:29