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Lulzacite

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Big Photo

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

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

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    (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., 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); Moëlo, Y., Gloaguen, E., Lulzac, Y. (2006): III. Les minéraux de Saint-Aubin. Le Cahier des Micromonteurs, 1/2006, 13-25
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