{{Short description|Phosphate mineral}} {{Infobox mineral | name = Lulzacite | category = Phosphate minerals | boxwidth = | boxbgcolor = | image = Lulzacite.jpg | imagesize = | caption = Lulzacite found in France | formula = Sr<sub>2</sub>Fe<sup>2+</sup>(Fe<sup>2+</sup>,Mg)<sub>2</sub>Al<sub>4</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>10</sub> | IMAsymbol = Lul<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref> | molweight = | strunz = 8.BK.25 | system = Triclinic | class = Pinacoidal ({{overline|1}}) <br/><small>(same H-M symbol)</small> | symmetry = ''P''{{overline|1}} | color = Grayish-green to yellowish-green | habit = Anhedral aggregates; rarely small euhedral crystals | twinning = | cleavage = None | fracture = | mohs = 5.5–6 | luster = Vitreous | polish = | refractive = ''n''<sub>α</sub> = 1.654<br />''n''<sub>β</sub> = 1.674<br />''n''<sub>γ</sub> = 1.684 | opticalprop = Biaxial (−) | birefringence = δ = 0.030 | dispersion = | pleochroism = | fluorescence= | absorption = | streak = | gravity = 3.55 | density = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Transparent–translucent | other = | references = <ref name=webmin /><ref name=mindat /><ref name=moelo00 /> }}
'''Lulzacite''' is a strontium-containing phosphate mineral with the chemical formula Sr<sub>2</sub>Fe<sup>2+</sup>(Fe<sup>2+</sup>,Mg)<sub>2</sub>Al<sub>4</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>10</sub>.<ref name=webmin>{{cite web|url=https://webmineral.com/data/Lulzacite.shtml|title=Lulzacite Mineral Data|work=webmineral.com|publisher=David Barthelmy|accessdate=September 4, 2010}}</ref><ref name=mindat>{{cite web|url=http://www.mindat.org/min-7058.html|title=Lulzacite|work=mindat.org|publisher=Jolyon Ralph and Ida Chau|accessdate=September 4, 2010}}</ref>
The mineral was first described in 2000 from quartzite deposits ({{coord|47|42|50|N|1|29|20|W}}) 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.<ref name=moelo00>{{cite journal|title=Lulzacite, Sr<sub>2</sub>Fe<sup>2+</sup>(Fe<sup>2+</sup>,Mg)<sub>2</sub>Al<sub>4</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>10</sub>, a new strontium phosphate (Saint-Aubin-des-Châteaux, Loire-Atlantique, France). |first1=Yves |last1=Moëlo |authorlink1=Yves Moëlo |author2=Bernard Lasnier |author3=Pierre Palvadeau |author4=Philippe Léone |author5=François Fontan |journal=Comptes Rendus de l'Académie des Sciences, Série IIA |date=15 March 2000|volume=330|issue=5 |pages=317–324|doi=10.1016/S1251-8050(00)00152-X|bibcode = 2000CRASE.330..317M }}</ref>
Lulzacite crystallizes in the triclinic system with P{{overline|1}} space group. It is isostructural with jamesite (Pb<sub>2</sub>Zn(Fe<sup>2+</sup>,Zn)<sub>2</sub>Fe<sup>3+</sup><sub>4</sub>(AsO<sub>4</sub>)<sub>4</sub>(OH)<sub>10</sub>).<ref name=moelo00/><ref>{{cite web|url=http://www.mindat.org/min-2071.html|title=Jamesite|work=mindat.org|publisher=Jolyon Ralph and Ida Chau|accessdate=September 4, 2010}}</ref>
==References== {{reflist}}
Category:Phosphate minerals Category:Strontium minerals Category:Iron(II) minerals Category:Magnesium minerals Category:Aluminium minerals Category:Triclinic minerals Category:Minerals in space group 2
{{phosphate-mineral-stub}}