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Lulzacite

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Bois-de-la-Roche quarry, Saint-Aubin-des-Châteaux, Loire-Atlantique, Pays de Loire, France
© P L e Roch

Show Lulzacite Photos (4)
Formula:
Sr
 
2
Fe
2+
 
(Fe
2+
 
,Mg)
 
2
Al
 
4
[(OH)
 
10
|(PO
 
4
)
 
4
]
System:TriclinicColour:Greyish-green
Lustre:VitreousHardness:5½ - 6
Name:For Y. Lulzac, discoverer of the mineral.
Isostructural with:Jamesite


A complex phosphate isotypic with jamesite.

Classification of Lulzacite

IMA status:Approved
Strunz 8th edition ID:7/B.24-65
Nickel-Strunz 10th (pending) edition ID:8.BK.25

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
K : With medium-sized and large cations, (OH, etc.):RO4 = 2:1, 2.5:1
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Type Occurrence of Lulzacite

Type Locality:Bois-de-la-Roche quarry, Saint-Aubin-des-Châteaux, Loire-Atlantique, Pays de Loire, France

Physical Properties of Lulzacite

Lustre:Vitreous
Colour:Greyish-green
Hardness (Mohs):5½ - 6

Crystallography of Lulzacite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 5.457Å, b = 9.131Å, c = 9.769Å
α = 108.47°, β = 91.72°, γ = 97.44°
Ratio:a:b:c = 0.598 : 1 : 1.07
Unit Cell Volume:V 456.5 ų
Z:1
X-Ray Powder Diffraction:
d-spacingIntensity
4.47 (41)
3.591 (50)
3.218 (100)
3.132 (62)
3.016 (56)
2.878 (42)
2.812 (62)
2.653 (44)
2.634 (43)

Optical Data of Lulzacite

Type:Biaxial (-)
RI values: nα = 1.654 nβ = 1.674 nγ = 1.684
2V:Measured: 45° to 65°, Calculated: 68°
Maximum Birefringence:δ = 0.030

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r < v distinct

Chemical Properties of Lulzacite

Formula:
Sr
 
2
Fe
2+
 
(Fe
2+
 
,Mg)
 
2
Al
 
4
[(OH)
 
10
|(PO
 
4
)
 
4
]
Essential elements:Al, Fe, H, O, P, Sr
All elements listed in formula:Al, Fe, H, Mg, O, P, Sr

Relationship of Lulzacite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.BK.05Brazilianite
NaAl
 
3
[(OH)
 
2
|PO
 
4
]
 
2
8.BK.10Medenbachite
Bi
3+
2
Fe
3+
 
(Cu,Fe
3+
 
)[(OH,O)
 
2
|AsO
 
4
]
 
2
8.BK.10Neustädtelite
Bi
3+
2
Fe
3+
 
(Fe
3+
 
,Co)
 
2
[(O,OH)|OH|AsO
 
4
]
 
2
8.BK.10Cobaltneustädtelite
Bi
3+
2
Fe
3+
 
(Co,Fe
3+
 
)
 
2
[(O,OH)|OH|AsO
 
4
]
 
2
8.BK.15Curetonite
Ba
 
4
Al
 
3
Ti(PO
 
4
)
 
4
(O,OH)
 
6
8.BK.20Heyite
Pb
 
5
Fe
2+
2
[O
 
2
|VO
 
4
]
 
2
8.BK.25Jamesite
Pb
 
2
Zn(Fe
2+
 
,Zn)
 
2
Fe
3+
4
[(OH)
 
10
|(AsO
 
4
)
 
4
]

Other Names for Lulzacite

Synonyms:
IMA1998-039
Other Languages:
German:Lulzacit
Spanish:Lulzacita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Lulzacite

Reference List:Moëlo, Y., Lasnier, B., Palvadeau, P., Leone, P. & Fontan, F. (2000): Lulzacite, Sr2Fe2+(Fe2+,Mg)2Al4(PO4)4(OH)10, a new strontium phosphate (Saint-Aubin-des-Chateaux, Loire-Atlantique, France). Comptes Rendu Académie des Sciences, Sér. IIa, 330: 317-324. (in French)

Leone, P., Palvadeau, P. & Moëlo, Y. (2000): Crystal structure of a new natural strontium, iron and aluminum hydroxyphosphate (lulzacite): Sr2Fe(Fe0.63Mg0.37)2Al4(PO4)4(OH)10. Comptes Rendus de l'Academie des Sciences, Série IIc, 3, 301-308. (in French)

Internet Links for Lulzacite

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    Localities for Lulzacite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    France
     
    • Pays de Loire
      • Loire-Atlantique
        • Saint-Aubin-des-Châteaux
    		Moëlo, Y., Gloaguen, E., Lulzac, Y. (2006): III. Les minéraux de Saint-Aubin. Le Cahier des Micromonteurs, 1/2006, 13-25
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 5th Nov 2009 22:03:19