Prior to the Bronze Age the site may also have been an important source of colourful pigments in the form of yellow pyromorphite
, black manganese wad, and of green and blue copper carbonates; something which might be indicated by the presence of Mesolithic hunting camps close to the possible sites of mineral extraction (Timberlake 2009).
I saw thumbnails from Franklin, New Jersey and from Maine, Germany, Switzerland and other desirable places; hematite roses from the Alps and pyromorphite
from Germany and Pennsylvania come to mind especially.
Many investigators have provided conclusive evidence for the ability of phosphate to immobilise dissolved Pb in contaminated soils through precipitation as fluoropyromorphite, pyromorphite
, hydroxypyromorphite, and chloropyromorphite, and as hopeite in the case of Zn (Bolan et al.
has also recovered pyromorphite
crystals while rehabilitating old workings containing unmined silver/lead ore.
Fish bones are made of the phosphate mineral apatite, which readily combines with lead to form pyromorphite
, a stable crystalline mineral that can't be absorbed by the human digestive system.
These include arsentsumebite, tsumebite, corkite, fornacite, duftite, caledonite, kettnerite, linarite, leadhillite, brochantite, mimetite, pyromorphite
, vanadinite and wulfenite.
Imagine a pyromorphite
specimen from China over 30 centimeters in diameter, covered with clusters of lime-green crystals without any damage.
Exploitation of lead ore veins around Badenweiler began during Roman times, and between about 1750 and final cessation of mining in 1926 many fine specimens of mimetite, pyromorphite
, galena, cerussite, fluorite and other minerals emerged from the district.
Richard was particularly successful with opening a large pocket of pyromorphite
in the Roughton Gill vein (now remembered fondly as "Barstow's Trench").
, plumbogummite, hemimorphite and mimetite from the Caldbeck Fells were, and remain, among the finest the world has ever seen.
1991) Famous mineral localities: pyromorphite
group minerals from the Caldbeck Fells, Cumbria, England.
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.