Pinite

Fine-grained pseudomorphs after silicate minerals, especially cordierite, nepheline and scapolite. Mineralogically, "pinite" is primarily composed of mica (usually muscovite) and clay group minerals. First reported from Pini adit, Aue, Erzgebirge, Saxony, Germany.

Bibliography



• Deer, W.A., Howie, R.A., Zussman, J. (1998) Rock-forming Minerals.
• Optical Mineralogy : The Nonopaque Minerals by Phillips / Griffen
• E. WM. Heinrich (1956): Microscopic Petrografy. Mcgraw-hill book company,inc
• Nesse, William D., 1986, Introduction to Optical Mineralogy: New York, Oxford University Press

Photo
cordieritepinitizzata(1).jpg

Cordierite completely altered by Pinite in a Rhyolite from San Vincenzo (Italy). XPL image, 10x (Field of view = 2mm)
cordieritepinitizzata(2).jpg

Cordierite completely altered by Pinite in a Rhyolite from San Vincenzo (Italy). PPL image, 10x (Field of view = 2mm)
cordieritepinitizzata(3).jpg

Cordierite completely altered by Pinite in a Rhyolite from San Vincenzo (Italy). XPL image, 10x (Field of view = 2mm)
cordieritepinitizzata(4).jpg

Cordierite completely altered by Pinite in a Rhyolite from San Vincenzo (Italy). XPL image, 10x (Field of view = 2mm)
cordieritepinitizzata(5).jpg

Cordierite completely altered by Pinite in a Rhyolite from San Vincenzo (Italy). PPL image, 10x (Field of view = 2mm)
cordieritepinitizzata(6).jpg

Cordierite completely altered by Pinite in a Rhyolite from San Vincenzo (Italy). XPL image, 10x (Field of view = 2mm)
cordieritepinitizzata(7).jpg

Cordierite completely altered by Pinite in a Rhyolite from San Vincenzo (Italy). XPL image, 10x (Field of view = 2mm)