Anhedral grains of alforsite, less than 0.1 mm, occur within clear quartz associated with celsian, titantaramellite, hyalophane and witherite at the Baumann pits and at site #2 further east.
Hyalophane was identified by EDS tests as minute grains, less than 0.01 mm, in a polished section of sanbornite-barite-quartz rock at the Baumann pits.
Although minor in content, other Ba minerals that also have resulted from the metamorphism include benitoite, bazirite, fresnoite, celsian, hyalophane, alforsite, walstromite, UK-10/Fe and UK-10/Mn.
He gave us his reprints on hyalophane and some specimens, not knowing that one of them would prove to be the key to the solution of their structure and development.
I could not find anything like hyalophane, and had to give it up that day, but with the firm resolution to come back again.
It turned out to be an extremely good hyalophane fourling with Carlsbad twin attached.
We were finally certain that we had found the hyalophane occurrence when we saw underground workings.
The area surrounding the hyalophane location was geologically less interesting, but was quite attractive because of the dense forests.
It was realized soon after that the Ba-rich member of the feldspar family, hyalophane, was present (Divljan, 1954).
Besides the quartz, more than 500 kg of hyalophane crystals were found.
The road was reconstructed and the hyalophane location thereby also became more easily accessible.
Carlsbad hyalophane twins were reported by them for the first time.