Solubility of copper in silicate melts

I found this while reviewing some data storage:   The article provides some insight on the solubility (and chemistry) of copper species in silicate melts (aka Glaze) and might be useful for the copper red enthusiasts. 

abstract from publisher: 
Geochimica et Cosmochimica Acta, Vol. 65, No. 12, pp. 1933–1951, 2001; PII S0016-7037(00)00545-2
https://doi.org/10.1016/S0016-7037(01)00545-2 
Solubility of copper in silicate melts as function of oxygen and sulfur fugacities, temperature, and silicate composition
A. HOLZHEID (1,2) and K. LODDERS (2) 

1 Institut fur Mineralogie und Geochemie, Universitat zu Koln, Zulpicher Strabe 49b, 50674 Koln, Germany 
2 Planetary Chemistry Laboratory, Department of Earth and Planetary Sciences and McDonnell Center for the Space Sciences, Washington University, Campus Box 1169, One Brookings Drive, St. Louis, MO 63130-4899, USA

(Received July 27, 2000; accepted in revised form November 10, 2000

full article from author: 
http://solarsystem.wustl.edu/wp-content/uploads/reprints/2001/Holzheid&Lodders2001GCA.pdf 

All is well here: school starts next week. 
LT