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Chrysocolla has a cyan (blue-green) color and is a minor ore of copper, having a hardness of 2.5 to 7.0. It is of secondary origin and forms in the oxidation zones of copper ore bodies. Associated minerals are quartz , limonite , azurite , malachite , cuprite , and other secondary copper minerals.
Martin Ruland (Lexicon alchemiae) explains chrysocolla as molybdochalkos, a copper-lead alloy. In Leyden papyrus X recipe 31 chrysocolla is an alloy composed of 4 parts copper, 2 parts asem (a kind of tin-copper alloy) and 1 part gold. Argyrochrysocolla appears to designate an alloy of gold and silver. [3]
Today, the governor of St. Helena lives in the same historic Plantation House where Sir William Grey-Wilson, Jonathan’s first owner, lived. The people on the island adore Jonathan and he also ...
Daggett, Parker, World-Wide Heritage Auctions: January 2005 $1,020,000 1863 $20 PR-65+ United States Eliasberg Heritage Auctions May 2022 $1,012,000 1921 $20 United States Hesselgesser Goldberg September 2007 $1,006,250 1796 With Stars $2.50 United States Byron Reed Heritage Auctions: January 2008 $1,006,250 1885 Trade Dollar United States Norweb
The limes existed from 83 to about 260 A.D., according to the UNESCO World Heritage Convention, and separated the empire from Germanic tribes. The coins show that Roman troops returning from ...
1. Vintage Playmobil. Could be worth: $1,200 Certainly you remember this not-even-close-to-as-good version of Lego. Playmobil is still around today, but if you've got the old Victorian Mansion set ...
Slice of Eilat stone. Eilat Stone (Hebrew: אבן אילת) is a gemstone that derives its name from the city of Eilat in Israel, where it was once mined.It is characterized by a green-blue heterogeneous mixture of several secondary copper minerals, including malachite, azurite, turquoise, pseudomalachite, and chrysocolla.
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