An archaeometallurgical characterization of two iron smelting tap slags recovered from the early medieval site Ponte di Val Gabbia I (Brescia, northern Italy) was performed. The main goal to infer working conditions ancient bloomery furnace in terms temperature and oxygen chemical potential. petrology both investigated by light optical microscopy scanning electron microscopy, while their compos...

Abstract Humans have always been exposed to different types of natural and cosmic radiation. At present we experience 83 % radiation, for example from granite marbles, building materials such as concrete, brick, granite, or drywall. However, although these are potential sources radon, they rarely the cause a high level pollution in building.Ashlar is material volcanic origin comprising heteroge...

The volcanic rocks in Semporna Peninsula, Sabah, Malaysia forms parts of the Miocene subjected slab during Miocene-Pliocene orogeny. This study presents new petrographic and geochemical data area. range composition from basaltic andesite, dacite to rhyolite, with most shows calc-alkaline affinity a minor tholeiitic feature. trace elements enrichment large-ion lithophile (LILE) light rare earth ...

Massive Zn-Cu-Fe sulfide deposits at the Garon Lake Mine occur in three sulfide lenses in a group of metamorphosed rhyolite crystal tuffs, metasediments and basalts. The major ore minerals are sphalerite, chalcopyrite, pyrrhotite and pyrite. Minor associated silicates are actinolite, tremolite, chlorite, albite and quartz. Rounded detrital pyrite, magnetite and chert grains and diagenetic p...