Photographs show a large humanoid head and torso, tailing into the sky and it is thought to have measured more than 100 metres (330ft) long.
The figure hung in the sky for about half an hour and some thought it was a manifestation of God.
The volume of red beds beneath or lateral to the Zambian portion of the copperbelt relative to the amount of known metal in the deposits is small in comparison to the volumes of source beds in other well-known districts such as the Polish Kupferschiefer and the White Pine District, USA.
Previous structural studies suggest that the rocks hosting the Zambian Cu deposits may be allochthonous or para-autochthonous.
But though he was initially hailed as a saviour for ending one-party rule, his time in office became blighted by corruption, political suppression and revelations of wild extravagance.
In the end, his many critics attributed his fall to the usual sins of the powerful: greed, vanity and pride.
“People have started realising that they will not get nominated as long as Lungu insists on standing,” Lee Habasonda, an analyst from the University of Zambia, said.
Zambia’s constitution limits presidents to two terms but Mr Lungu argues that his first period as leader doesn’t count because he did not serve a full term after he assumed power following the death of predecessor Michael Sata in 2014.
The Central African Copperbelt in Zambia and the Democratic Republic of Congo is the world's largest sediment-hosted stratiform Cu province.
The source for the Cu in sediment-hosted stratiform Cu deposits is generally believed to be thick sections of oxidised siliciclastic sediments (red beds) and volcanic rocks deposited in early rift sequences underlying or laterally adjacent to the ore-bearing sediments.
“We cannot proceed to manage national affairs with cold indifference when the levels of corruption are swelling and being perpetrated by those who are expected to be the solution,” Mr Kalaba wrote.