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<TD><H1><A HREF=http://store.unconventionallapidarist.com/Category619>Collector Spheres</A> / Chrysocolla</H1></TD>
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<P><p><b>Chrysocolla</b> (hydrated copper silicate) is a mineral, (Cu,<span class="mw-redirect">Al</span>)<sub>2</sub>H<sub>2</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub>·nH<sub>2</sub>O. It is of secondary origin and forms in the <span class="mw-redirect">oxidation</span> zones of copper ore bodies. Associated minerals are quartz, limonite, azurite, malachite, cuprite, and other secondary copper minerals.</p>
<p>Chrysocolla has an attractive blue-green colour and is a minor ore of copper, having a <span class="mw-redirect">hardness</span> of 2.5 to 3.5. It is also used as an ornamental stone. It is typically found as glassy botryoidal or rounded masses and crusts, or vein fillings. Because of its light color, it is sometimes confused with turquoise. Commonly it occurs only as pourous crusts unsuitable for gem use, but high quality, gem grade chrysocolla can be <span class="mw-redirect">translucent</span> and is highly prized.</p>
<p>The name comes from the Greek chrysos, "gold", and kolla, "glue", in allusion to the name of the material used to solder gold, and was first used by Theophrastus in 315 BCE.</p>
<p>Notable occurrences include Israel, <span class="mw-redirect">Democratic Republic of Congo</span>, Chile, Cornwall in England, and Arizona, Utah, New Mexico and Pennsylvania in the United States.</p>
<font class="font2">This article is licensed under the
<a href="http://www.gnu.org/copyleft/fdl.html" class="external text" title="http://www.gnu.org/copyleft/fdl.html" rel="nofollow" target="_blank">GNU Free Documentation License</a>.
It uses material from the <a href="http://en.wikipedia.org/wiki/Chrysocolla" class="external text" title="http://en.wikipedia.org/wiki/Chrysocolla" rel="nofollow" target="_blank">Wikipedia article "Chrysocolla"</a></font></P>
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<A HREF=http://store.unconventionallapidarist.com/Product13994 TITLE="Africa Chrysocolla Sphere">Africa Chrysocolla Sphere</A>
-- <STRIKE>$80.00</STRIKE> <font color=black><B>$56.00</B></font>
-- Michigan Chrysocolla Sphere ( 1.6" )</P>
<BR clear=left><BR><P><A HREF=http://store.unconventionallapidarist.com/Product11389 TITLE="Chrysocolla Sphere"><IMG SRC="https://store.nexternal.com/lapidarist/images/collaball1010-03.jpg" ALIGN=left ALT="Chrysocolla Sphere" NAME="Chrysocolla Sphere" BORDER=0></A>
<A HREF=http://store.unconventionallapidarist.com/Product11389 TITLE="Chrysocolla Sphere">Chrysocolla Sphere</A>
-- <STRIKE>$200.00</STRIKE> <font color=black><B>$140.00</B></font>
-- Chrysocolla Sphere ( 1.61 lbs)</P>
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