Lawsonite R050042
Name: Lawsonite
RRUFF ID: R050042
Ideal Chemistry: CaAl2(Si2O7)(OH)2·H2O
Locality: California, USA
Source: University of Arizona Mineral Museum 8433 [view label]
Owner: RRUFF
Description: White to colorless fragments
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Lawsonite (4) ]
Quick search: [ All Lawsonite samples (2) ]
CHEMISTRY 
RRUFF ID: R050042.2
Sample Description: Microprobe fragment
Measured Chemistry: (Ca0.98Fe2+0.02)Al2.00Si2.00O7(OH)2·H2O
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Sample is oriented, mounted onto a pin and polished
Pin ID: L00291
Orientation: Laser parallel to  c*  (0 0 1).     Fiducial mark perpendicular to laser is parallel to  a   [1 0 0].
DOWNLOADS:

  To download sample data,
  please select a specific
  orientation angle.
Direction of polarization of laser relative to fiducial mark:
X Min:    X Max:    X Sort:
BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R050042
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
DOWNLOADS:

Raman Data (RAW) View Graph
RRUFF File
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050042.1
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
DOWNLOADS:

Infrared Data (Processed)
RRUFF File
X Min:    X Max:    X Sort:
POWDER DIFFRACTION 
RRUFF ID: R050042.1
Sample Description: Powder
Cell Refinement Output: a: 5.8477(1)Å    b: 8.7946(1)Å    c: 13.1324(2)Å
alpha: 90.°    beta: 90.°    gamma: 90.°   Volume: 675.38(1)Å3    Crystal System: orthorhombic
  File Type Information Close
Calculated diffraction file.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

DOWNLOADS:

Cell Refinement Data
Cell Refinement Output Data
DIF File
X-ray Data (XY - Processed)
RRUFF File
X-ray Data (XY - RAW) View Graph
RRUFF File
X Min:    X Max:    X Sort:
REFERENCES for Lawsonite

American Mineralogist Crystal Structure Database Record: [view record]

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Ransome F L (1895) On lawsonite a new rock-forming mineral from the Tiburon Peninsula, Marin County, California, Bulletin Of The Department Of Geology University Of California, 1, University of California Berkeley California 301-313   [view file]

Davis G A, Pabst A (1960) Lawsonite and pumpellyite in glaucophane schist, North Berkeley Hills, California with notes the on x-ray crystallography of lawsonite, American Journal of Science, 258, 689-704   [view file]

Rumanova I M, Belov N V (1960) False symmetry of lawsonite, Soviet Physics - Crystallography, 5, 199-201   [view file]

Baur W H (1978) Crystal structure refinement of lawsonite, American Mineralogist, 63, 311-315   [view file]

Le Cléac'h A, Gillet P (1990) IR and Raman spectroscopic study of natural lawsonite, European Journal of Mineralogy, 2, 43-53   [view file]

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

Libowitzky E, Armbruster T (1995) Low-temperature phase transitions and the role of hydrogen bonds in lawsonite, American Mineralogist, 80, 1277-1285   [view file]

Comodi P, Zanazzi P F (1996) Effects of temperature and pressure on the structure of lawsonite, American Mineralogist, 81, 833-841   [view file]

Libowitzky E, Rossman G R (1996) FTIR spectroscopy of lawsonite between 82 and 325 K, American Mineralogist, 81, 1080-1091   [view file]

Daniel I, Fiquet G, Gillet P, Schmidt M W, Hanfland M (2000) High-pressure behavior of lawsonite: a phase transition at 8.6 GPa, European Journal of Mineralogy, 21, 721-733

Pawley A R, Allan D R (2001) A high-pressure structural study of lawsonite using angle-dispersive powder-diffraction methods with synchrotron radiation, Mineralogical Magazine, 65, 41-58   [view file]

Sondergeld P, Schranz W, Tröster 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   [view file]

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

Liebscher A, Dörsam 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-P21/m phase transition, American Mineralogist, 95, 724-735   [view file]

Dörsam G, Liebscher A, Wunder B, Franz G, Gottschalk M (2011) Synthesis of Pb-zoisite and Pb-lawsonite, Neues Jahrbuch für Mineralogie, Abhandlungen, 188, 99-110

Ende M, Wunder B, Koch-Müller M, Peppinger T, Buth G, Giester G, Lengauer C L, Libowitzky E (2016) T-induced displacive phase transition of end-member Pb-lawsonite, Mineralogical Magazine, 80, 249-267