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- Phillips X-ray Diffractometer (XRD), purchased in
1964 and upgraded in 1990. Instrument capabilities: (1) Powder
diffraction; ( 2) Powder and camera diffraction. Located at Woods
Hole.
- Diano 2000, purchased in 1991. Horizontal goniometer
(no corrections required, very high accuracy); computer controlled;
nickel filter; collimation slits. Operational; recently moved,
realigned, recalibrated. Single samples, oriented slides (packed
powder cells also acceptable); Cu K-alpha tube; used mainly for
clays and carbonates but other minerals can be run. Located in
Reston.
- Scintag X1, Automated X-ray Powder Diffractometer
(XRD), purchased in 1996. Instrument capabilities (1) as configured:
instrument is used primarily for mineral identification of single
and multiphase samples and for semiquantitative XRD analysis
at room temperature. Both a single and a 12-position sample changer
(for unattended operation) are available for use. Sample holders
include top- and side-loading sample cups and zero-background
quartz plates. Instrument is interfaced with a PC (Windows NT
operating system) for computer control of hardware and for online
data reduction. (2) possible upgrades: additional components
available from the manufacturer include high and low temperature
stages. Located in Reston
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