Mexican Geodes, Collection Geodes, Minerals Collec

The Geodas are mineral pieces of usually spherical form though also they exist in other more irregular forms, can appear in igneous or sedimentary rocks, generally they are hollow in his(her,your) interior and exhibit crystalline formations(trainings), commonly of quartz, appearing towards the center, though in occasions the growth of the minerals in his(her,your) interior manages to fill the cavity completely, when ésto happens, the geoda is appropriatly been called a nodule. The geodas in his(her,your) exterior exhibit a rough(harsh) slightly colouring texture but if they are opened or cut by half, show seams and crystalline formations(trainings) of a great beauty.