Lawsonite
A valid IMA mineral species - grandfathered
This page kindly sponsored by Donna Whitney
About Lawsonite
Formula:
CaAl2(Si2O7)(OH)2 · H2O
Colour:
colorless, white, grayish blue, pale blue
Lustre:
Vitreous, Greasy
Hardness:
7½
Specific Gravity:
3.1
Crystal System:
Orthorhombic
Member of:
Name:
Named by Frederick Leslie Ransome and Charles Palache in 1895 in honour of geologist Andrew Cowper Lawson (July 25, 1861 Anstruther, Scotland — San Leandro, California, June 16, 1952), geologist with the Canadian Geological Survey and for most of his career a professor of geology and mineralogy at the University of California.
Unique Identifiers
Mindat ID:
2353
Long-form identifier:
mindat:1:1:2353:1
GUID
(UUID V4):
(UUID V4):
c2bfe4bd-4fcc-42a9-a9ad-f44f34f04e91
IMA Classification of Lawsonite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1895
Classification of Lawsonite
9.BE.05
9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
56.2.3.1
56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
2 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
2 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
16.9.18
16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca
16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Lws | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Lws | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279. |
Lws | Siivolam & Schmid (2007) | Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download |
Lws | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371 |
Lws | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Lawsonite
Vitreous, Greasy
Transparency:
Transparent, Translucent
Colour:
colorless, white, grayish blue, pale blue
Streak:
white
Hardness:
7½ on Mohs scale
Cleavage:
Perfect
[001] perfect
[110] poor
[001] perfect
[110] poor
Fracture:
Irregular/Uneven
Density:
3.1 g/cm3 (Measured) 3.09 g/cm3 (Calculated)
Optical Data of Lawsonite
Type:
Biaxial (+)
RI values:
nα = 1.665 nβ = 1.674(2) nγ = 1.685(1)
2V:
Measured: 84° to 85°, Calculated: 76° to 86°
Max Birefringence:
δ = 0.020
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:
strong
Chemistry of Lawsonite
Mindat Formula:
CaAl2(Si2O7)(OH)2 · H2O
Crystallography of Lawsonite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cmcm
Cell Parameters:
a = 5.847 Å, b = 8.79 Å, c = 13.128 Å
Ratio:
a:b:c = 0.665 : 1 : 1.494
Unit Cell V:
674.72 ų
Z:
4
Morphology:
prismatic/tabular
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) |
---|---|---|---|---|---|---|---|
0000639 | Lawsonite | Baur W H (1978) Crystal structure refinement of lawsonite American Mineralogist 63 311-315 | 1978 | Tiburon Peninsula, Marin County, California, USA | 0 | 293 | |
0001763 | Lawsonite | Libowitzky E, Armbruster T (1995) Low-temperature phase transitions and the role of hydrogen bonds in lawsonite American Mineralogist 80 1277-1285 | 1995 | 0 | 293 | ||
0001764 | Lawsonite | Libowitzky E, Armbruster T (1995) Low-temperature phase transitions and the role of hydrogen bonds in lawsonite American Mineralogist 80 1277-1285 | 1995 | 0 | 293 | ||
0001765 | Lawsonite | Libowitzky E, Armbruster T (1995) Low-temperature phase transitions and the role of hydrogen bonds in lawsonite American Mineralogist 80 1277-1285 | 1995 | 0 | 293 | ||
0001766 | Lawsonite | Libowitzky E, Armbruster T (1995) Low-temperature phase transitions and the role of hydrogen bonds in lawsonite American Mineralogist 80 1277-1285 | 1995 | 0 | 293 | ||
0001767 | Lawsonite | Libowitzky E, Armbruster T (1995) Low-temperature phase transitions and the role of hydrogen bonds in lawsonite American Mineralogist 80 1277-1285 | 1995 | 0 | 293 | ||
0001768 | Lawsonite | Libowitzky E, Armbruster T (1995) Low-temperature phase transitions and the role of hydrogen bonds in lawsonite American Mineralogist 80 1277-1285 | 1995 | 0 | 293 | ||
0001800 | Lawsonite | Comodi P, Zanazzi P F (1996) Effects of temperature and pressure on the structure of lawsonite American Mineralogist 81 833-841 | 1996 | 0.0001 | 293 | ||
0001801 | Lawsonite | Comodi P, Zanazzi P F (1996) Effects of temperature and pressure on the structure of lawsonite American Mineralogist 81 833-841 | 1996 | 0.05 | 293 | ||
0001802 | Lawsonite | Comodi P, Zanazzi P F (1996) Effects of temperature and pressure on the structure of lawsonite American Mineralogist 81 833-841 | 1996 | 2.87 | 293 | ||
0001803 | Lawsonite | Comodi P, Zanazzi P F (1996) Effects of temperature and pressure on the structure of lawsonite American Mineralogist 81 833-841 | 1996 | 0.0001 | 717 | ||
0001804 | Lawsonite | Comodi P, Zanazzi P F (1996) Effects of temperature and pressure on the structure of lawsonite American Mineralogist 81 833-841 | 1996 | 0.0001 | 811 | ||
0003737 | Lawsonite | Sondergeld P, Schranz W, Troster A, Armbruster T, Giester G, Kityk A, Carpenter M A (2005) Ordering and elasticity associated with low-temperature phase transitions in lawsonite American Mineralogist 90 448-456 | 2005 | 0 | 215 | ||
0018934 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018935 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018936 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018937 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018938 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018939 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018946 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018947 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018948 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018949 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018950 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018951 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0018952 | Lawsonite | Liebscher A, Dorsam G, Franz G, Wunder B, Gottschalk M (2010) Crystal chemistry of synthetic lawsonite solid-solution series CaAl2 [(OH)2/(Si2O7)](H2O)-SrAl2[(OH)2/(Si2O7)](H2O) and the Cmcm-P2_1/m phase transition American Mineralogist 95 724-735 | 2010 | synthetic | 0 | 293 | |
0006433 | Lawsonite | Armbruster T, Oberhansli R, Bermanec V (1992) Crystal structure of SrMn2(Si2O7)(OH)2.H2O, a new mineral of the lawsonite type European Journal of Mineralogy 4 17-22 | 1992 | 0 | 293 | ||
0007253 | Lawsonite | Kolesov B A, Lager G A, Schultz A J (2008) Behaviour of H2O and OH in lawsonite: a single-crystal neutron diffraction and Raman spectroscopic investigation European Journal of Mineralogy 20 63-72 | 2008 | 0 | 293 | ||
0018953 | Lawsonite | Pawley A R, Allan D R (2001) A high-pressure study of lawsonite using angle-dispersive powder-diffraction methods with synchrotron radiation Mineralogical Magazine 65 41-58 | 2001 | synthetic | 0 | 293 | |
0018954 | Lawsonite | Pawley A R, Allan D R (2001) A high-pressure study of lawsonite using angle-dispersive powder-diffraction methods with synchrotron radiation Mineralogical Magazine 65 41-58 | 2001 | synthetic | 9.8 | 293 | |
0018955 | Lawsonite | Pawley A R, Allan D R (2001) A high-pressure study of lawsonite using angle-dispersive powder-diffraction methods with synchrotron radiation Mineralogical Magazine 65 41-58 | 2001 | synthetic | 11.9 | 293 | |
0018956 | Lawsonite | Pawley A R, Allan D R (2001) A high-pressure study of lawsonite using angle-dispersive powder-diffraction methods with synchrotron radiation Mineralogical Magazine 65 41-58 | 2001 | synthetic | 16.5 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
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Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.84 Å | (60) |
3.66 Å | (60) |
2.726 Å | (70) |
2.680 Å | (50) |
2.624 Å | (100) |
2.433 Å | (60) |
2.129 Å | (60) |
1.550 Å | (80) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3b: Earth’s earliest hydrosphere | >4.45 |
16 : Low-𝑇 aqueous alteration of Hadean subaerial lithologies (see also #23) | |
Stage 5: Initiation of plate tectonics | <3.5-2.5 |
39 : High-𝑃 metamorphism (blueschist, eclogite, ultrahigh 𝑃 facies) | |
40 : Regional metamorphism (greenschist, amphibolite, granulite facies) | |
41 : Mantle metasomatism |
Type Occurrence of Lawsonite
Reference:
Ransome, F.L. (1895) On lawsonite, a new rock-forming mineral from the Tiburon Peninsula, Marin County. University of California, Department of Geological Science Bulletin: 1: 301-312.
Other Language Names for Lawsonite
Varieties of Lawsonite
Chromium-bearing Lawsonite | A chromium-bearing variety of Lawsonite. |
Relationship of Lawsonite to other Species
Member of:
Other Members of this group:
Amamoorite | CaMn2+2Mn3+(Si2O7)O(OH) | Mon. 2/m : P21/b |
Cortesognoite | CaV2(Si2O7)(OH)2 · H2O | Orth. mmm (2/m 2/m 2/m) : Cmcm |
Hennomartinite | SrMn3+2(Si2O7)(OH)2 · H2O | Orth. mmm (2/m 2/m 2/m) : Cmcm |
Ilvaite | CaFe3+Fe2+2(Si2O7)O(OH) | Orth. mmm (2/m 2/m 2/m) |
Itoigawaite | SrAl2(Si2O7)(OH)2 · H2O | Orth. mmm (2/m 2/m 2/m) : Cmcm |
Manganilvaite | CaFe2+Fe3+Mn2+(Si2O7)O(OH) | Mon. 2/m : P21/b |
Noelbensonite | BaMn3+2(Si2O7)(OH)2 · H2O | Orth. mm2 |
Common Associates
Associated Minerals Based on Photo Data:
32 photos of Lawsonite associated with Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
16 photos of Lawsonite associated with Quartz | SiO2 |
10 photos of Lawsonite associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
2 photos of Lawsonite associated with Albite | Na(AlSi3O8) |
2 photos of Lawsonite associated with Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
1 photo of Lawsonite associated with Omphacite | (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6 |
1 photo of Lawsonite associated with Cymrite | BaAl2Si2(O,OH)8 · H2O |
1 photo of Lawsonite associated with Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
Related Minerals - Strunz-mindat Grouping
9.BE. | Paralomonosovite | Na6◻4Ti4(Si2O7)2[PO3OH][PO2(OH)2]O2(OF) |
9.BE. | Cámaraite | Ba3Na(Fe2+,Mn)8Ti4(Si2O7)4O4(OH,F)7 |
9.BE. | Christofschäferite-(Ce) | Ce3CaMnTiFe(3+)Ti2(Si2O7)2O8 |
9.BE. | Bobshannonite | Na2KBa(Mn,Na)8(Nb,Ti)4(Si2O7)4O4(OH)4(O,F)2 |
9.BE. | Calciomurmanite | (Na,◻)2Ca(Ti,Mg,Nb)4[Si2O7]2O2(OH,O)2(H2O)4 |
9.BE. | Batievaite-(Y) | Y2Ca2Ti(Si2O7)2(OH)2(H2O)4 |
9.BE. | Delhuyarite-(Ce) | Ce4Mg(Fe3+,W)3◻(Si2O7)2O6(OH)2 |
9.BE.X | Asimowite | Fe2+4O(Si2O7) |
9.BE. | Moxuanxueite | NaCa6Zr(Si2O7)2OF3 |
9.BE. | Alexkuznetsovite-(Ce) | Ce2Mn(CO3)(Si2O7) |
9.BE. | Biraite-(La) | La2Fe2+(CO3)(Si2O7) |
9.BE. | Zinkgruvanite | Ba4Mn2+4Fe3+2(Si2O7)2(SO4)2O2(OH)2 |
9.BE. | Madeiraite | Na2Ca2Fe2Zr2(Si2O7)2O2F2 |
9.BE. | Bortolanite | Ca2(Ca1.5Zr0.5)Na(NaCa)Ti(Si2O7)2(OF)F2 |
9.BE. | Nacareniobsite-(Y) | Na3Ca3YNb(Si2O7)2OF3 |
9.BE. | Pilanesbergite | Na2Ca2Fe2Ti2(Si2O7)2O2F2 |
9.BE. | Alfredcasparite | Sr2TiO(Si2O7) |
9.BE.02 | Wadsleyite | Mg4O(Si2O7) |
9.BE.05 | Hennomartinite | SrMn3+2(Si2O7)(OH)2 · H2O |
9.BE.05 | Noelbensonite | BaMn3+2(Si2O7)(OH)2 · H2O |
9.BE.05 | Itoigawaite | SrAl2(Si2O7)(OH)2 · H2O |
9.BE.05 | Cortesognoite | CaV2(Si2O7)(OH)2 · H2O |
9.BE.07 | Ilvaite | CaFe3+Fe2+2(Si2O7)O(OH) |
9.BE.07 | Manganilvaite | CaFe2+Fe3+Mn2+(Si2O7)O(OH) |
9.BE.07 | Amamoorite | CaMn2+2Mn3+(Si2O7)O(OH) |
9.BE.10 | Suolunite | Ca2(H2Si2O7) · H2O |
9.BE.12 | Jaffeite | Ca6(Si2O7)(OH)6 |
9.BE.15 | Fresnoite | Ba2Ti(Si2O7)O |
9.BE.17 | Baghdadite | Ca6Zr2(Si2O7)2O4 |
9.BE.17 | Burpalite | Na2CaZr(Si2O7)F2 |
9.BE.17 | Cuspidine | Ca8(Si2O7)2F4 |
9.BE.17 | Hiortdahlite | Na2Ca4(Ca0.5Zr0.5)Zr(Si2O7)2OF3 |
9.BE.17 | Janhaugite | (Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2 |
9.BE.17 | Låvenite | Na2Ca2Mn2Zr2(Si2O7)2O2F2 |
9.BE.17 | Niocalite | (Ca,Nb)4(Si2O7)(O,OH,F)2 |
9.BE.17 | Normandite | NaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF |
9.BE.17 | Wöhlerite | Na2Ca4ZrNb(Si2O7)2O3F |
9.BE.20 | Mosandrite-(Ce) | (Ca3REE)[(H2O)2Ca0.5◻0.5]Ti(Si2O7)2(OH)2(H2O)2 |
9.BE.20 | Nacareniobsite-(Ce) | Na3Ca3(Ce,REE)Nb(Si2O7)2OF3 |
9.BE.20 | Roumaite | (Ca,Na,REE,◻)7(Nb,Ti)[Si2O7]2OF3 |
9.BE.20 | Rinkite-(Y) | Na2Ca4YTi(Si2O7)2OF3 |
9.BE.22 | Götzenite | NaCa6Ti(Si2O7)2OF3 |
9.BE.22 | Hainite-(Y) | Na2Ca4(Y,REE)Ti(Si2O7)2OF3 |
9.BE.22 | Rosenbuschite | Na6Ca6Zr3Ti(Si2O7)4O2F6 |
9.BE.22 | Kochite | Na3Ca2MnZrTi(Si2O7)2OF3 |
9.BE.22 | Fogoite-(Y) | Na3Ca2Y2Ti(Si2O7)2OF3 |
9.BE.23 | Dovyrenite | Ca6Zr(Si2O7)2(OH)4 |
9.BE.25 | Barytolamprophyllite | (Ba,Na)2(Na,Ti,Fe3+)4Ti2(Si2O7)2O(OH,F) |
9.BE.25 | Ericssonite | BaMn2+2Fe3+(Si2O7)O(OH) |
9.BE.25 | Lamprophyllite | (Na,Mn2+)3(Sr,Na)2(Ti,Fe3+)3(Si2O7)2O2(OH,O,F)2 |
9.BE.25 | Ericssonite-2O | BaMn2+2Fe3+(Si2O7)O(OH) |
9.BE.25 | Seidozerite | Na4MnZr2Ti(Si2O7)2O2F2 |
9.BE.25 | Nabalamprophyllite | (BaNa)Ti2Na3Ti(Si2O7)2O2(OH)2 |
9.BE.25 | Grenmarite | Na4MnZr3(Si2O7)2O2F2 |
9.BE.25 | Schüllerite | Ba2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4 |
9.BE.25 | Kazanskyite | BaNa3Ti2Nb(Si2O7)2O2(OH)2(H2O)4 |
9.BE.25 | Lileyite | Ba2(Na,Fe,Ca)3MgTi2(Si2O7)2O2F2 |
9.BE.25 | Emmerichite | Ba2Na(Na,Fe2+)2(Fe3+,Mg)Ti2(Si2O7)2O2F2 |
9.BE.25 | Saamite | Ba◻Na3Ti2Nb(Si2O7)2O2(OH)F(H2O)2 |
9.BE.25 | Fluorlamprophyllite | Na3(SrNa)Ti3(Si2O7)2O2F2 |
9.BE.25 | Fluorbarytolamprophyllite | (Ba,Sr)2[(Na,Fe2+)3(Ti,Mg)F2][Ti2(Si2O7)2O2] |
9.BE.27 | Murmanite | Na2Ti2(Si2O7)O2 · 2H2O |
9.BE.27 | Vigrishinite | NaZnTi4(Si2O7)2O3(OH)(H2O)4 |
9.BE.27 | Kolskyite | CaNa2Ti4(Si2O7)2O4(H2O)7 |
9.BE.27 | Selivanovaite | NaFe3+Ti4(Si2O7)2O4(H2O)4 |
9.BE.30 | Epistolite | (Na◻)Nb2Na3Ti(Si2O7)2O2(OH)2(H2O)4 |
9.BE.32 | Lomonosovite | Na5Ti2(Si2O7)(PO4)O2 |
9.BE.35 | Vuonnemite | Na11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH) |
9.BE.37 | Sobolevite | Na13Ca2Mn2Ti3(Si2O7)2(PO4)4O3F3 |
9.BE.40 | Innelite | Ba4Ti2Na(NaMn2+)Ti(Si2O7)2[(SO4)(PO4)]O2[O(OH)] |
9.BE.40 | Phosphoinnelite | Na3Ba4Ti3(Si2O7)2(PO4,SO4)2O2F |
9.BE.42 | Yoshimuraite | Ba2Mn2Ti(Si2O7)(PO4)O(OH) |
9.BE.45 | Quadruphite | Na6Na2(CaNa)2Na2Ti2Na2Ti2(Si2O7)2(PO4)4O4F2 |
9.BE.47 | Polyphite | Na5(Na4Ca2)Ti2(Si2O7)(PO4)3O2F2 |
9.BE.50 | Bornemanite | Na6BaTi2Nb(Si2O7)2(PO4)O2(OH)F |
9.BE.50 | Shkatulkalite | Na2Nb2Na3Ti(Si2O7)2O2(FO)(H2O)4(H2O)3 |
9.BE.55 | Bafertisite | Ba2Fe2+4Ti2(Si2O7)2O2(OH)2F2 |
9.BE.55 | Hejtmanite | Ba2Mn2+4Ti2(Si2O7)2O2(OH)2F2 |
9.BE.55 | Bykovaite | (Ba,Na,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(H2O,F,OH)2 · 3.5H2O |
9.BE.55 | Nechelyustovite | (Ba,Sr,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(O,H2O,F)2 · 4.5H2O |
9.BE.60 | Delindeite | (Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2 · 2H2O |
9.BE.62 | Orthochevkinite | (Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22 |
9.BE.62 va | Strontium Perrierite | (Ce,Sr,La,Ca)4Fe2+(Ti,Zr,Fe)2Ti2(Si2O7)2O8 |
9.BE.62 | Chevkinite-(Nd) | (Nd,REE)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8 ? |
9.BE.62 | Perrierite-(Nd) | Nd4MgFe3+2Ti2(Si2O7)2O8 ? |
9.BE.65 | Bussenite | Na2Ba2Fe2+Ti(Si2O7)(CO3)(OH)3F |
9.BE.67 | Jinshajiangite | BaNaFe2+4Ti2(Si2O7)2O2(OH)2F |
9.BE.67 | Perraultite | BaNaMn2+4Ti2(Si2O7)2O2(OH)2F |
9.BE.70 | Karnasurtite-(Ce) | (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O |
9.BE.70 | Perrierite-(Ce) | Ce4MgFe3+2Ti2(Si2O7)2O8 |
9.BE.70 | Strontiochevkinite | (Sr,La,Ce,Ca)4Fe2+(Ti,Zr)2Ti2(Si2O7)2O8 |
9.BE.70 | Chevkinite-(Ce) | Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2 |
9.BE.70 | Polyakovite-(Ce) | (Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8 |
9.BE.70 | Rengeite | Sr4ZrTi4(Si2O7)2O8 |
9.BE.70 | Matsubaraite | Sr4Ti5(Si2O7)2O8 |
9.BE.70 | Dingdaohengite-(Ce) | (Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe2+)2Ti2(Si2O7)2O8 |
9.BE.70 | Maoniupingite-(Ce) | (Ce,Ca)4(Fe3+,Ti,Fe2+,◻)(Ti,Fe3+,Fe2+,Nb)4(Si2O7)2O8 |
9.BE.70 | Perrierite-(La) | (La,Ce,Ca)4(Fe2+,Mn)(Ti,Fe3+,Al)4[(Si2O7)O4]2 |
9.BE.70 | UM2008-53-SiO:SrTiZr | Sr4ZrTi4(Si2O7)2O8 |
9.BE.70 | Hezuolinite | (Sr,REE)4Zr(Ti,Fe3+)4(Si2O7)2O8 |
9.BE.72 | Fersmanite | Ca4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3 |
9.BE.75 | Belkovite | Ba3(Nb,Ti)6(Si2O7)2O12 |
9.BE.77 | Nasonite | Pb6Ca4(Si2O7)3Cl2 |
9.BE.80 | Kentrolite | Pb2Mn3+2(Si2O7)O2 |
9.BE.80 | Melanotekite | Pb2Fe3+2(Si2O7)O2 |
9.BE.82 | Tilleyite | Ca5(Si2O7)(CO3)2 |
9.BE.82 | Alexkuznetsovite-(La) | La2Mn(CO3)(Si2O7) |
9.BE.85 | Killalaite | Ca6.4(H0.6Si2O7)2(OH)2 |
9.BE.87 | Stavelotite-(La) | (La,Nd,Ca)3Mn2+3Cu(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30 |
9.BE.90 | Biraite-(Ce) | Ce2Fe2+(Si2O7)(CO3) |
9.BE.90 | Magnesiorowlandite-(Y) | Y4(Mg,Fe)(Si2O7)2F2 |
9.BE.92 | Cervandonite-(Ce) | (Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH) |
9.BE.92 | Chirvinskyite | (Na,Ca)13(Fe,Mn,◻)2(Ti,Zr)5(Si2O7)4(OH,O)12 · 2H2O |
9.BE.95 | Batisivite | BaV3+8Ti6(Si2O7)O22 |
9.BE.95 | Rusinovite | Ca10(Si2O7)3Cl2 |
9.BE.97 | Schlüterite-(Y) | (Y,REE)2AlSi2O7(OH)2F |
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.
Lawsonite in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Lawsonite
mindat.org URL:
https://www.mindat.org/min-2353.html
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References for Lawsonite
Reference List:
Baur, Werner H. (1978) Crystal structure refinement of lawsonite. American Mineralogist, 63 (3-4) 311-315
Libowitzky, Eugen, Armbruster, Thomas (1995) Low-temperature phase transitions and role of hydrogen bonds in lawsonite. American Mineralogist, 80 (11) 1277-1285 doi:10.2138/am-1995-11-1217
Pawley, A. R., Redfern, Simon A. T., Holland, T. J. B. (1996) Volume behavior of hydrous minerals at high pressure and temperature; I, Thermal expansion of lawsonite, zoisite, clinozoisite, and diaspore. American Mineralogist, 81 (3) 335-340 doi:10.2138/am-1996-3-407
Localities for Lawsonite
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
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Reed Station, Tiburon Uplands Nature Preserve, Tiburon Peninsula, Marin County, California, USA