Nadorite is a

mineral In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.John P. Rafferty, ed. (2 ...

with the

chemical formula In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbol ...

PbSbO₂Cl. It crystallizes in the orthorhombic

crystal system In crystallography, a crystal system is a set of point groups (a group of geometric symmetries with at least one fixed point). A lattice system is a set of Bravais lattices. Space groups are classified into crystal systems according to their poin ...

and is brown, brownish-yellow or yellow in color, with a white or yellowish-white streak. Nadorite is named after Djebel Nador in

Algeria ) , image_map = Algeria (centered orthographic projection).svg , map_caption = , image_map2 = , capital = Algiers , coordinates = , largest_city = capital , relig ...

, where it was first identified in 1870.

Geologic occurrence

Djebel Nador and Djebel Debbar (both in the

Constantine Province Constantine ( ar, ولاية قسنطينة) is one of the 58 provinces ('' wilayas'') of Algeria, whose capital is the city of the same name. History In 1984 Mila Province was carved out of its territory. Administrative divisions The provin ...

of Algeria) are its co- type localities. Also found as an alteration product of

jamesonite Jamesonite is a sulfosalt mineral, a lead, iron, antimony sulfide with formula Pb4FeSb6S14. With the addition of manganese it forms a series with benavidesite.http://rruff.geo.arizona.edu/doclib/hom/jamesonite.pdf Handbook of Mineralogy It is a ...

Cornwall Cornwall (; kw, Kernow ) is a historic county and ceremonial county in South West England. It is recognised as one of the Celtic nations, and is the homeland of the Cornish people. Cornwall is bordered to the north and west by the Atlantic ...

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

References

Bibliography

*Palache, P.; Berman H.; Frondel, C. (1960). "''Dana's System of Mineralogy, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. (Seventh Edition)"'' John Wiley and Sons, Inc., New York, pp. 1039-1041. Halide minerals Lead minerals Antimonate minerals Orthorhombic minerals Minerals in space group 63 {{Halide-mineral-stub