Erik B. Melchiorre

3 Questions 14 Answers 0 Followers

Questions related from Erik B. Melchiorre

Localities where azurite and/or malachite sedimentary concretions are reported?

Any information on localities where azurite or malachite is reported as sedimentary concretions? Specifically as flattened disks or diagenetic nodules? Thanks!

01 January 2016 6,397 1 View

Looking for stichtite from India, Brasil, and Israel. Reported, but confirmed?

The rare mineral stichtite is reported for the Campo Formoso ultramafic complex (Brasil), Mysore District Nuggihalli (India), and the Hatrurim Formation (Israel). Anyone out there have samples...

09 September 2015 3,423 11 View

Is there an easy way to calculate what the penetration depth is for X-ray florescence in gold?

Is there an easy way to calculate what the penetration depth is for X-ray florescence in gold? This is for a 50 kev system. I am trying to determine how deep our system can "see" into natural gold...

07 July 2014 1,253 5 View