Archive for Volcanic Glass

Macroscopical aspects

The macroscopic aspects of the volcanic glasses are used by archaeologists in the initial sorting of their material. The parameters are not only colours (grey, black, red, brown, yellow, green,…), but textures (smooth to rough), transparency (translucent, semi-opaque, opaque), appearance (milky, metallic, shiny, dull), zonation (bedded, cloudy, dapple,…), heterogeneity (ashes, spherulites,…). We are currently building […]