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Haüyne
A valid IMA mineral species - grandfathered
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Sulfide and polysulfide anions also occur in some material.
Colour:
Blue, white, grey, yellow, green, pink
Lustre:
Vitreous, Greasy
Hardness:
5½ - 6
Specific Gravity:
2.44 - 2.5
Crystal System:
Isometric
Member of:
Name:
Tentatively named latialite in 1803 by Carlo Giuseppe Gismondi for the locality at Campagna (Latium) without formal publication.
Named in 1807 by Tønnes Christian Bruun de Neergaard in honor of Abbé René Just Haüy (28 February 1743, Saint-Just-en-Chaussée, Picardy, France - 1 June 1822, Paris, France), "the Father of Crystallography". Haüy was a Roman Catholic Priest and curator of the Muséum National d'Histoire Naturelle in Paris. Haüy devised and sold wooden crystal models which were highly prized internationally, both among his contemporaries and today.
Named berzeline in 1831 by Louis Albert Necker de Saussure in honour of Jöns Jakob Berzelius.
The mineral was temporarily named hauynite by James Dwight Dana in 1868.
The following links confirm the research to establish the holotype specimen and the type-locality:https://gminromano.it/wp-content/uploads/2021/03/CP2009-art2.pdf
https://gminromano.it/wp-content/uploads/2021/03/CP2009-art2-eng.pdf
Named in 1807 by Tønnes Christian Bruun de Neergaard in honor of Abbé René Just Haüy (28 February 1743, Saint-Just-en-Chaussée, Picardy, France - 1 June 1822, Paris, France), "the Father of Crystallography". Haüy was a Roman Catholic Priest and curator of the Muséum National d'Histoire Naturelle in Paris. Haüy devised and sold wooden crystal models which were highly prized internationally, both among his contemporaries and today.
Named berzeline in 1831 by Louis Albert Necker de Saussure in honour of Jöns Jakob Berzelius.
The mineral was temporarily named hauynite by James Dwight Dana in 1868.
The following links confirm the research to establish the holotype specimen and the type-locality:https://gminromano.it/wp-content/uploads/2021/03/CP2009-art2.pdf
https://gminromano.it/wp-content/uploads/2021/03/CP2009-art2-eng.pdf
Sodalite Group.
Also classed in theFeldspathoid Supergroup.
Ideally, the two sodalite cages in haüyne's unit cell containNa3CaSO4.
Pale-coloured varieties are easily confused withnosean and darker, opaque blue ones, usually sulphide-bearing, are called lazurite, currently defined as the sulphide-dominant end member, but to date, all analysed specimens have been found to be just sulphide-bearing haüyne.
Crystallizes in dodecahedra and octahedra with dodecahedral cleavage; an accessory mineral in alkaline igneous rocks, esp. extrusives, commonly associated withnepheline orleucite.
The following (dead?) links confirm the research to establish the holotype specimen and the type-locality:http://www.gminromano.it/Cercapietre/rivista09/art02.pdf
http://www.gminromano.it/Cercapietre/rivista09/art02ing.pdf
Visit gemdat.org forgemological information about Haüyne.
Also classed in theFeldspathoid Supergroup.
Ideally, the two sodalite cages in haüyne's unit cell containNa3CaSO4.
Pale-coloured varieties are easily confused withnosean and darker, opaque blue ones, usually sulphide-bearing, are called lazurite, currently defined as the sulphide-dominant end member, but to date, all analysed specimens have been found to be just sulphide-bearing haüyne.
Crystallizes in dodecahedra and octahedra with dodecahedral cleavage; an accessory mineral in alkaline igneous rocks, esp. extrusives, commonly associated withnepheline orleucite.
The following (dead?) links confirm the research to establish the holotype specimen and the type-locality:http://www.gminromano.it/Cercapietre/rivista09/art02.pdf
http://www.gminromano.it/Cercapietre/rivista09/art02ing.pdf
Visit gemdat.org forgemological information about Haüyne.
![Na3Ca(Si3Al3)O12(SO4)](#"/photo-246999.html"><img src="/image.pl?url=https%3a%2f%2fwww.mindat.org%2fimagecache%2fa3%2f39%2f05001580017271923739229.jpg&f=jpg&w=240" alt="05001580017271923739229.jpg" /></a><div><b>Renee Just Haüy</b></div></div></div><div><div><span>Formula:</span><div class=){kind=link}