Results 151 to 160 of about 7,155 (175)

Silica gossan as a prospective guide for amethyst geode deposits in the Ametista do Sul mining district, Paraná volcanic province, southern Brazil

Journal of Geochemical Exploration, 2015
Sérgio Benjamin Baggio, Leo Afrâneo Hartmann, Hans-Joachim Massonne   +2 more
exaly  

geode, n.

2023
openaire   +1 more source

Giant-geode endowment of tumuli in the Veia Alta flow, Ametista do Sul

Journal of South American Earth Sciences, 2017
Leo Afrâneo Hartmann
exaly  

The IGS Geode

2021
openaire   +1 more source

Geodes

2012
openaire   +1 more source

“Johnny Geode”

Rocks & Minerals, 1962
openaire   +1 more source

Controls on prolate and oblate geode geometries in the Veia Alta basalt flow, largest world producer of amethyst, Paraná volcanic province, Brazil

Ore Geology Reviews, 2015
Leo Afrâneo Hartmann, Sérgio Benjamin Baggio   +1 more
exaly  

geode

2014
openaire   +1 more source

Lapping Geodes

Rocks & Minerals, 1974
openaire   +1 more source

Geodes

2006
openaire   +1 more source