X-ray Diffraction (XRD)

The Geo Laboratory at the Natural History Museum (NHM-UiO) is equipped with two diffractometers used for qualitative identification of minerals in rocks and crystal structure analysis. We can analyze powder samples and single crystals. Preparation labs are available for various sample pretreatments.

XRD Instruments

  • Siemens D5005 Powder X-ray diffractometer (PXRD) in Bragg-Brentano geometry with a scintillation counter and Cu X-ray source. Installed in 1998.
  • Rigaku Dual Beam Synergy-S single-crystal X-ray diffractometer (SXRD) equipped with a HyPix-6000HE detector, micro-focused Mo and Cu X-ray sources. It can also run Gandolfi movements for phase identification of very small samples (down to ~30 μm) and very small amounts of powders (mg). Installed in 2018.

Software Packages and Databases

  • Bruker AXS DIFFRAC.EVA for phase identification based on the Crystallography Open Database (COD) and the most recent PDF-4 database from the International Center of Diffraction Data (ICDD).
  • Bruker AXS TOPAS V5 for structural characterization of powdered samples (Rietveld-based full profile methods): lattice parameters and microstructure.
  • CrysAlis Pro for single crystal and Gandolfi XRD measurements.

Prices

Prices are in NOK excl. VAT. These fees are subject to change at the discretion of the lab.

Instrument User Unit of pricing Price 

PXRD/Gandolfi

Internal (UiO) *

sample

250

PXRD/Gandolfi

External

sample

600

SXRD

Internal (UiO) *

dataset

1000

SXRD

External

dataset

3000 

SXRD

External

dataset and structure solution

7000 

* UiO Master students have access to the instruments free of charges.

 

Publications

Kampf, A.R., Chukanov, N.V., Möhn, G., Dini, M., Molina Donoso, A.A., Friis, H. 2019. Cuatrocapaite-(NH4) and cuatrocapaite-(K), two new minerals from the Torrecillas mine, Iquique Province, Chile, related to lucabindiite and gajardoite. Mineralogical Magazine, volume 83, issue 5, 741-748.
DOI: 10.1180/mgm.2019.26

 

Gradstein, F.M., Waskowska, A., Kopaevich, L., Watkins, L.K., Friis, H., Pérez Panera, J. 2018. Berriasian planktonic foraminifera and calcareous nannofossils from Crimea Mountains, with reference to microfossil evolution. Swiss Journal of Palaeontology, volume 138, issue 2, 213-236.
DOI: 10.1007/s13358-018-0175-8

Tags: powder XRD, single-crystal XRD, Gandolfi, crystallography, structure solution, mineralogy, paleontology, microanalyses
Published Feb. 12, 2019 9:15 AM - Last modified Nov. 25, 2019 1:10 PM