Lulzacite
A valid IMA mineral species
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About Lulzacite
Formula:
Sr2Fe2+(Fe2+,Mg)2Al4(PO4)4(OH)10
Colour:
Greyish-green
Lustre:
Vitreous
Hardness:
5½ - 6
Specific Gravity:
3.55
Crystal System:
Triclinic
Name:
To honor Mr. Yves Lulzac, from Nantes, France, geologist-engineer with BRGM (Bureau de Recherches Géologiques et Minières). He discovered the mineral.
Type Locality:
Unique Identifiers
Mindat ID:
7058
Long-form identifier:
mindat:1:1:7058:0
GUID
(UUID V4):
(UUID V4):
aad951ed-b35e-49b4-a289-fa8da8252728
IMA Classification of Lulzacite
Classification of Lulzacite
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
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
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Lul | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Lulzacite
Vitreous
Colour:
Greyish-green
Hardness:
5½ - 6 on Mohs scale
Cleavage:
None Observed
None
None
Density:
3.55 g/cm3 (Measured) 3.58 g/cm3 (Calculated)
Optical Data of Lulzacite
Type:
Biaxial (-)
RI values:
nα = 1.654 nβ = 1.674 nγ = 1.684
2V:
Measured: 45° to 65°, Calculated: 68°
Max Birefringence:
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r < v distinct
Pleochroism:
Visible
Comments:
brown-yellow to pale blue-violet
Chemistry of Lulzacite
Mindat Formula:
Sr2Fe2+(Fe2+,Mg)2Al4(PO4)4(OH)10
Crystallography of Lulzacite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.457 Å, b = 9.131 Å, c = 9.769 Å
α = 108.47°, β = 91.72°, γ = 97.44°
α = 108.47°, β = 91.72°, γ = 97.44°
Ratio:
a:b:c = 0.598 : 1 : 1.07
Unit Cell V:
456.5 ų
Z:
1
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0018779 | Lulzacite | Leone P, Palvadeau P, Moelo Y (2000) Structure cristalline d'un nouvel hydroxyphosphate naturel de strontium, fer et aluminium (lulzacite), Sr2Fe(Fe0,63Mg0,37)2Al4(PO4)4(OH)10 Chimie de l'etat Solide et Cristallochimie 3 301-308 | 2000 | Saint-Aubin-des-Chateaux, Loire-Atlantique, France | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.47 Å | (41) |
| 3.591 Å | (50) |
| 3.218 Å | (100) |
| 3.132 Å | (62) |
| 3.016 Å | (56) |
| 2.878 Å | (42) |
| 2.812 Å | (62) |
| 2.653 Å | (44) |
| 2.634 Å | (43) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) |
Type Occurrence of Lulzacite
General Appearance of Type Material:
Grayish green aggregates up to several centimeters long. Grains are typically anhedral, rarely euhedral to 4 mm.
Place of Conservation of Type Material:
Mineralogical Museum of the École des Mines, Paris, France.
Museum national d’histoire naturelle, Paris, France.
Collection de minéralogie de la Sorbonne (Paris University), France.
Museum national d’histoire naturelle, Paris, France.
Collection de minéralogie de la Sorbonne (Paris University), France.
Geological Setting of Type Material:
In quartz veinlets, that occur at the contact between Ordovician quartzite and limestone.
Associated Minerals at Type Locality:
Synonyms of Lulzacite
Other Language Names for Lulzacite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 8.BK.05 | Brazilianite | NaAl3(PO4)2(OH)4 |
| 8.BK.10 | Medenbachite | Bi2Fe3+Cu2+(AsO4)2O(OH)3 |
| 8.BK.10 | Neustädtelite | Bi2Fe3+(Fe3+,Co)(AsO4)2(O,OH)4 |
| 8.BK.10 | Cobaltneustädtelite | Bi2Fe3+(Co,Fe3+)(AsO4)2(O,OH)4 |
| 8.BK.15 | Curetonite | Ba(Al,Ti)(PO4)(OH,O)F |
| 8.BK.20 | Heyite | Pb5Fe2+2(VO4)2O4 |
| 8.BK.25 | Jamesite | Pb2Zn(Fe2+,Zn)2Fe3+4(AsO4)4(OH)10 |
| 8.BK.25 | Désorite | Pb2(Fe3+6Zn)O2(PO4)4(OH)8 |
| 8.BK.30 | Nishanbaevite | KAl2O(AsO4)(SO4) |
| 8.BK.35 | Arsmirandite | Na18Cu12Fe3+O8(AsO4)8Cl5 |
| 8.BK.35 | Lehmannite | Na18Cu12TiO8(AsO4)8FCl5 |
| 8.BK.35 | Lebedevite | K4Na14Cu14O8(AsO4)8Cl6 |
Other Information
Notes:
Slightly soluble in hot HNO3 but inert in HCl.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Lulzacite
mindat.org URL:
https://www.mindat.org/min-7058.html
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References for Lulzacite
Reference List:
Moëlo, Yves, Lasnier, Bernard, Palvadeau, Pierre, Léone, Philippe, Fontan, François (2000) La lulzacite, Sr2Fe2+(Fe2+,Mg)2Al4(PO4)4(OH)10, un nouveau phosphate de strontium (Saint-Aubin-des-Châteaux, Loire-Atlantique, France) Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science, 330 (5) 317-324 doi:10.1016/s1251-8050(00)00152-x
Leone, Philippe, Palvadeau, Pierre, Moëlo, Yves (2000) Structure cristalline d'un nouvel hydroxyphosphate naturel de strontium, fer et aluminium (lulzacite), Sr2Fe(Fe0,63Mg0,37)2Al4(PO4)4(OH)10. Comptes Rendus de l'Académie des Sciences - Series IIC - Chemistry, 3 (4) 301-308 doi:10.1016/s1387-1609(00)00117-1
Frost, Ray L., López, Andrés, Belotti, Fernanda M., Xi, Yunfei, Scholz, Ricardo (2014) A vibrational spectroscopic study of the phosphate mineral lulzacite Sr2Fe2+(Fe2+,Mg)2Al4(PO4)4(OH)10. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 127. 243-247 doi:10.1016/j.saa.2014.02.041
Localities for Lulzacite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
France (TL) | |
| Moëlo et al. (2000) +1 other reference |
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Bois-de-la-Roche quarry, Saint-Aubin-des-Châteaux, Châteaubriant-Ancenis, Loire-Atlantique, Pays de la Loire, France