Lorenzenite
A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.
About Lorenzenite
Formula:
Na2Ti2(Si2O6)O3
Colour:
Pale purple-brown, pale pink to mauve, brown to black
Lustre:
Adamantine, Vitreous, Sub-Metallic, Dull
Hardness:
6
Specific Gravity:
3.42 - 3.45
Crystal System:
Orthorhombic
Name:
For Johannes Theodor Lorenzen (1855-1884), Danish mineralogist
This page provides mineralogical data about Lorenzenite.
Unique Identifiers
Mindat ID:
2436
Long-form identifier:
mindat:1:1:2436:1
GUID
(UUID V4):
(UUID V4):
55935751-be52-404f-b221-71dd40eb5d9a
IMA Classification of Lorenzenite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Na2Ti2O3(Si2O6)
First published:
1898
Type description reference:
Classification of Lorenzenite
9.DB.10
9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
65.1.6.1
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
14.9.2
14 : Silicates not Containing Aluminum
9 : Silicates of Ti
14 : Silicates not Containing Aluminum
9 : Silicates of Ti
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 |
|---|---|---|
| Lrz | 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 Lorenzenite
Adamantine, Vitreous, Sub-Metallic, Dull
Transparency:
Transparent, Opaque
Colour:
Pale purple-brown, pale pink to mauve, brown to black
Streak:
White to pale brown
Hardness:
6 on Mohs scale
Cleavage:
Distinct/Good
Distinct on {010}
Distinct on {010}
Fracture:
Irregular/Uneven
Density:
3.42 - 3.45 g/cm3 (Measured) 3.44 g/cm3 (Calculated)
Optical Data of Lorenzenite
Type:
Biaxial (-)
RI values:
nα = 1.910 - 1.950 nβ = 2.010 - 2.040 nγ = 2.030 - 2.060
2V:
Measured: 38° to 41°, Calculated: 34°
Max Birefringence:
δ = 0.120
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:
Very High
Dispersion:
r > v distinct
Optical Extinction:
X = b; Y = a; Z = c.
Pleochroism:
Weak
Comments:
X=Y= pale reddish yellow, yellowish brown to light brown
Z= pale yellow, brownish to dark brown
Z= pale yellow, brownish to dark brown
Chemistry of Lorenzenite
Mindat Formula:
Na2Ti2(Si2O6)O3
Elements listed:
Common Impurities:
Zr,Al,Y,TR,La,Ce,Fe,Nb,Mn,Ca,Sr,F,H2O
Crystallography of Lorenzenite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcn
Cell Parameters:
a = 8.7128(10) Å, b = 5.2327(5) Å, c = 14.487(2) Å
Ratio:
a:b:c = 1.665 : 1 : 2.769
Unit Cell V:
660.48 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Equant, bladed prismatic to needlelike
Comment:
Cell parameters from Sundberg et al. (1987)
Crystallographic forms of Lorenzenite
Crystal Atlas:
Image Loading
Click on an icon to view
Lorenzenite no.1 - Goldschmidt (1913-1926)
Lorenzenite no.2 - Goldschmidt (1913-1926)
Lorenzenite no.3 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by
www.smorf.nl.
Toggle
Edge Lines | Miller Indices | Axes
Transparency
Opaque | Translucent | Transparent
View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
Toggle
Edge Lines | Miller Indices | Axes
Transparency
Opaque | Translucent | Transparent
View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
|---|---|---|---|---|---|---|---|
| 0001064 | Lorenzenite | Sundberg M R, Lehtinen M, Kivekas R (1987) Refinement of the crystal structure of ramsayite (lorenzenite) American Mineralogist 72 173-177 |  | 1987 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.74 Å | (100) |
| 3.33 Å | (70) |
| 1.60 Å | (50) |
| 5.56 Å | (40) |
| 2.45 Å | (40) |
| 1.64 Å | (40) |
| 3.12 Å | (30) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Geological Setting:
Nepheline syenites and pegmatites
Type Occurrence of Lorenzenite
Place of Conservation of Type Material:
University of Copenhagen, Copenhagen, Denmark, 1967.382.
Harvard University, Cambridge, Massachusetts, USA, 87917.
Harvard University, Cambridge, Massachusetts, USA, 87917.
Reference:
Flink, G. (1898) Meddelelser om Grønland, 14, 250.
Synonyms of Lorenzenite
Other Language Names for Lorenzenite
German:Lorenzenit
Ramsayit
Ramzait
Ramsayit
Ramzait
Russian:Лоренценит
Simplified Chinese:硅钠钛矿
Spanish:Lorenzenita
Ramsayita
Ramzaita
Ramsayita
Ramzaita
Traditional Chinese:矽鈉鈦礦
Common Associates
Associated Minerals Based on Photo Data:
| 62 photos of Lorenzenite associated with Aegirine | NaFe3+Si2O6 |
| 27 photos of Lorenzenite associated with Calcite | CaCO3 |
| 19 photos of Lorenzenite associated with Elpidite | Na2ZrSi6O15 · 3H2O |
| 14 photos of Lorenzenite associated with Albite | Na(AlSi3O8) |
| 13 photos of Lorenzenite associated with Nepheline | Na3K(Al4Si4O16) |
| 11 photos of Lorenzenite associated with Eudialyte | Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2 |
| 11 photos of Lorenzenite associated with Arfvedsonite Root Name Group | ANa2(Z2+4Fe3+}Si8O22(OH,F,Cl)2 |
| 10 photos of Lorenzenite associated with Quartz | SiO2 |
| 9 photos of Lorenzenite associated with Leucosphenite | BaNa4Ti2B2Si10O30 |
| 9 photos of Lorenzenite associated with Catapleiite | Na2Zr(Si3O9) · 2H2O |
Related Minerals - Strunz-mindat Grouping
| 9.DB.05 | Balipholite | BaLiMg2Al3(Si2O6)2(OH)4 |
| 9.DB.05 | Carpholite | Mn2+Al2(Si2O6)(OH)4 |
| 9.DB.05 | Ferrocarpholite | Fe2+Al2Si2O6(OH)4 |
| 9.DB.05 | Magnesiocarpholite | MgAl2Si2O6(OH)4 |
| 9.DB.05 | Potassiccarpholite | K(Mn2+,Li)2Al4Si4O12(OH,F)8 |
| 9.DB.05 | Vanadiocarpholite | Mn2+V3+Al(Si2O6)(OH)4 |
| 9.DB.15 | Lintisite | LiNa3Ti2(Si2O6)2O2 · 2H2O |
| 9.DB.15 | Punkaruaivite | LiTi2(HSi4O12)(OH)2 · H2O |
| 9.DB.17 | Eliseevite | LiNa1.5Ti2(H1.5Si4O12)O2 · 2H2O |
| 9.DB.20 | Kukisvumite | Na6ZnTi4(Si8O24)O4 · 4H2O |
| 9.DB.20 | Manganokukisvumite | Na6MnTi4(Si8O24)O4 · 4H2O |
| 9.DB.25 | Vinogradovite | Na4Ti4(Si2O6)2[(Si,Al)4O10]O4 · (H2O,Na,K)3 |
| 9.DB.25 | Paravinogradovite | Na1-2(Ti,Fe3+)4(Si2O6)2(AlSi3O10)(OH)4 · H2O |
| 9.DB.30 | Nchwaningite | Mn2+2(SiO3)(OH)2 · H2O |
| 9.DB.35 | Plancheite | Cu8(Si8O22)(OH)4 · H2O |
| 9.DB.40 | Shattuckite | Cu5(Si2O6)2(OH)2 |
| 9.DB.40 | UM2005-31-SiO:CuH | Cu11(SiO4)(OH)18 · 9H2O (?) |
| 9.DB.45 | Aerinite | (Ca5.1Na0.5)(Fe3+,Al,Fe2+,Mg)4(Al,Mg)6[HSi12O36(OH)12][(CO3)1.2(H2O)12] |
| 9.DB.50 | Capranicaite | KCaNaAl4B4Si2O18 |
Fluorescence of Lorenzenite
Pale yellow to dull green in SW
Other Information
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 Lorenzenite
mindat.org URL:
https://www.mindat.org/min-2436.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Lorenzenite
Reference List:
Localities for Lorenzenite
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.
Quick NavTopAbout LorenzeniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystallographic forms Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada