It has also been found in float with minute white sprays of pyromorphite
, hemimorphite and chrysocolla after malachite.
The exceptional pyromorphite
from Roughton Gill, LG-30, is one of the finest Greenbank pieces from the Lanfine collection.
Members of the pyromorphite
group that occur there include matt-heddleite, mimetite.
He is particularly associated with the world-renowned pyromorphite
, mimetite, hemimorphite, and linarite from Caldbeck, and also did a good trade in rare lead minerals from Leadhills and Wanlockhead in Scotland.
Friedrichssegen Mine Ems, Nassau, Germany 5" tall ex-collection British Museum (Natural History)
And micromounters take note: hiding in the copper, in some cases, are sharp, tiny crystals of cerussite, silver, pyromorphite
, iodargyrite, and probably an unknown or two.
In 1967 he moved back to Massachusetts where he settled in Millis, and began exploring New England mines, collecting fluorite in Westmoreland, New Hampshire, amethyst in Bellingham, and pyromorphite
in Loudville, Massachusetts.
There were very extensive representations from the Broken Hill collections of Milton Lavers and Rod Sielecki, and I still cherish images of certain specimens of copper, rhodonite, pyromorphite
,anglesite, smithsonite, cerussite ...
? But is the chemistry right for this paragenesis?
The use of phosphates has been shown to be effective in reducing toxicity and mobility of lead through the formation of insoluble and geochemically stable lead pyromorphites
(Chen et al., 1997).
He is perhaps most remembered for introducing world-class Bunker Hill pyromorphites
to the collecting world at the 1982 Tucson Gem and Mineral Show.
Although these photographs, and the specimens which are their subjects, vary considerably in quality, some of the best of the latter are truly superb--the pyromorphites
. anglesites, cerussites and wulfenites from Phoenixville, the pyrites and chalcopyrites from French Creek, the rutile from Parkesburg, such as the apatite-(CaF) from Cornog--while others are quite surprising, even to this Pennsylvania native, e.g.