Nadorite
Encyclopedia
Nadorite is a mineral
with the chemical formula
PbSb[O2|Cl]. It crystallizes in the orthorhombic crystal system
and is brown, brownish-yellow or yellow in colour, with a white or yellowish-white streak
.
Nadorite is named after Djebel Nador in Algeria
, where it was first identified in 1870. Djebel Nador and Djebel Debbar (both in the Constantine Province
of Algeria) are its co-type localities
.
Mineral
A mineral is a naturally occurring solid chemical substance formed through biogeochemical processes, having characteristic chemical composition, highly ordered atomic structure, and specific physical properties. By comparison, a rock is an aggregate of minerals and/or mineraloids and does not...
with the chemical formula
Chemical formula
A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound....
PbSb[O2|Cl]. It crystallizes in the orthorhombic crystal system
Crystal system
In crystallography, the terms crystal system, crystal family, and lattice system each refer to one of several classes of space groups, lattices, point groups, or crystals...
and is brown, brownish-yellow or yellow in colour, with a white or yellowish-white streak
Streak (mineralogy)
The streak of a mineral is the color of the powder produced when it is dragged across an unweathered surface. Unlike the apparent color of a mineral, which for most minerals can vary considerably, the trail of finely ground powder generally has a more consistent characteristic color, and is thus...
.
Nadorite is named after Djebel Nador in Algeria
Algeria
Algeria , officially the People's Democratic Republic of Algeria , also formally referred to as the Democratic and Popular Republic of Algeria, is a country in the Maghreb region of Northwest Africa with Algiers as its capital.In terms of land area, it is the largest country in Africa and the Arab...
, where it was first identified in 1870. Djebel Nador and Djebel Debbar (both in the Constantine Province
Constantine Province
Constantine is one of the 48 provinces of Algeria, whose capital is the city of the same name.- Adminsitrative divisions :The province is divided into 6 districts, which are subdivided into 12 communes or municipalities.-Districts:...
of Algeria) are its co-type localities
Type locality (geology)
Type locality , also called type area or type locale, is the where a particular rock type, stratigraphic unit, fossil or mineral species is first identified....
.