Misplaced Pages

Lulzacite

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Lulzacite
Lulzacite found in France
General
CategoryPhosphate minerals
Formula
(repeating unit)
Sr2Fe(Fe,Mg)2Al4(PO4)4(OH)10
IMA symbolLul
Strunz classification8.BK.25
Crystal systemTriclinic
Crystal classPinacoidal (1)
(same H-M symbol)
Space groupP1
Identification
ColorGrayish-green to yellowish-green
Crystal habitAnhedral aggregates; rarely small euhedral crystals
CleavageNone
Mohs scale hardness5.5–6
LusterVitreous
DiaphaneityTransparent–translucent
Specific gravity3.55
Optical propertiesBiaxial (−)
Refractive indexnα = 1.654
nβ = 1.674
nγ = 1.684
Birefringenceδ = 0.030
References

Lulzacite is a strontium-containing phosphate mineral with the chemical formula Sr2Fe(Fe,Mg)2Al4(PO4)4(OH)10.

The mineral was first described in 2000 from quartzite deposits (47°42′50″N 1°29′20″W / 47.71389°N 1.48889°W / 47.71389; -1.48889) at Saint-Aubin-des-Châteaux, Loire-Atlantique, France, and is named after Y. Lulzac, a French geologist who discovered the mineral. In this deposit, lulzacite occurs within quartz and siderite veinlets at quartzite–limestone contacts. Other minerals found in the veinlets include apatite, goyazite, and pyrite.

Lulzacite crystallizes in the triclinic system with P1 space group. It is isostructural with jamesite (Pb2Zn(Fe,Zn)2Fe4(AsO4)4(OH)10).

References

  1. Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ "Lulzacite Mineral Data". webmineral.com. David Barthelmy. Retrieved September 4, 2010.
  3. ^ "Lulzacite". mindat.org. Jolyon Ralph and Ida Chau. Retrieved September 4, 2010.
  4. ^ Moëlo, Yves; Bernard Lasnier; Pierre Palvadeau; Philippe Léone; François Fontan (15 March 2000). "Lulzacite, Sr2Fe(Fe,Mg)2Al4(PO4)4(OH)10, a new strontium phosphate (Saint-Aubin-des-Châteaux, Loire-Atlantique, France)". Comptes Rendus de l'Académie des Sciences, Série IIA. 330 (5): 317–324. Bibcode:2000CRASE.330..317M. doi:10.1016/S1251-8050(00)00152-X.
  5. "Jamesite". mindat.org. Jolyon Ralph and Ida Chau. Retrieved September 4, 2010.


Stub icon

This article about a specific phosphate mineral is a stub. You can help Misplaced Pages by expanding it.

Categories: