?Thanks Steve.
This is a great time to bring this old data (2013) out and discuss the rocks and the different methods of XRF and Gamma Spec, and maybe get some more interesting samples sent in to? test here.?
George Dowell
"Geo"
----- Original Message -----
From: WILLIAM S Dubyk <sdubyk@...>
To:
[email protected]Sent: Sat, 25 Jan 2020 09:49:23 -0500 (EST)
Subject: Re: [XRF] Microlite in Rose Muscovite
Geo, based upon the picture, the label, association with microlite, and the positive ID of rubidium in the sample, I think it can be safely called a lithium mica, generally known as lepidolite. This type of mica usually has from 1-3% rubidium. Pretty
cool! That sample may even be from the Harding mine, looks a lot like what we collect there.
Steve
One of the half-dozen or so minerals used in the study to compare various exciters and sensors used for XRF and Gamma Spectrometry.
First up is the "Microlite in Rose Muscovite"
In one of the Am-X8 exciter jigs with Amptek Silicon Detector.
Attached are the .mca files for the 14,400 second isotope scan, then the 150 second X-Ray tube scan (set at only 10 microamps).
Since the Rb K X-Rays could have been interfered with by the Np-237 X-Rays from the source, the X-Ray tube scan removed any doubt.
Geo
