Gianellaite Mineral Data

General Gianellaite Information
Chemical Formula:	Hg4(SO4)N2
Composition:	Molecular Weight = 926.44 gm
	Mercury 86.61 % Hg 90.06 % Hg₂O
	Sulfur 3.46 % S 8.64 % SO₃
	Nitrogen 3.02 % N 5.62 % (NH₄)₂O
	Oxygen 6.91 % O
	______ ______
	100.00 % 104.32 % = TOTAL OXIDE
Empirical Formula:	Hg₄(SO₄)N₂
Environment:	Secondary mineral coating fracture surfaces in oxidized portions of a hydrothermal mercury deposit, the nitrogen likely derived from decaying organic matter.
IMA Status:	Approved IMA 1977
Locality:	Perry pit, Mariposa mine, Terlingua district, Brewster Co., Texas. Link to MinDat.org Location Data.
Name Origin:	Named for Vincent Paul Gianella (1886-1983), Head of the Department of Geology, MacKay School of Mines, University of Nevada, Reno, Nevada, USA.
Name Pronunciation:	Gianellaite + Pronunciation