[WED]Elborough Mine

Mon, 17 Feb 2003 05:27:50 EST

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>From Pigot's 1844 Somerset Directory.
"The Mendip Hills ...... furnish lead, lapis calaminaris, copper and various 
spars and crystals; the first named metal, however is nearly exhausted."

The zinc containing ore lapis calaminaris, or calamine, was used for the 
preparation of Brass using the calamine cementation process.
This method of making brass from calamine was carried on until as least as 
late as 1858. However during this time some other methods were also 
discovered.
In 1738 the Champions of Bristol developed a method of extraction zinc metal 
from the calamine ore. By 1758 he had shown how this metal could then be 
reacted directly with copper to make a better quality brass.

Regards Stan Mapstone

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<HTML><FONT FACE=3Darial,helvetica><FONT  SIZE=3D2 FAMILY=3D"SANSSERIF" FACE=
=3D"Arial" LANG=3D"0">From Pigot's 1844 Somerset Directory.<BR>
"The Mendip Hills ...... furnish lead, lapis calaminaris, copper and various=
 spars and crystals; the first named metal, however is nearly exhausted."<BR=
>
<BR>
The zinc containing ore lapis calaminaris, or calamine, was used for the pre=
paration of Brass using the calamine cementation process.<BR>
This method of making brass from calamine was carried on until as least as l=
ate as 1858. However during this time some other methods were also discovere=
d.<BR>
In 1738 the Champions of Bristol developed a method of extraction zinc metal=
 from the calamine ore. By 1758 he had shown how this metal could then be re=
acted directly with copper to make a better quality brass.<BR>
</FONT><FONT  COLOR=3D"#000000" style=3D"BACKGROUND-COLOR: #ffffff" SIZE=3D2=
 FAMILY=3D"SERIF" FACE=3D"Times New Roman" LANG=3D"0"><BR>
</FONT><FONT  COLOR=3D"#000000" style=3D"BACKGROUND-COLOR: #ffffff" SIZE=3D2=
 FAMILY=3D"SCRIPT" FACE=3D"Comic Sans MS" LANG=3D"0">Regards Stan Mapstone</=
FONT></HTML>

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