PHYSICAL PKOPI:I;TII:S 



271 



solution; such bodies of minerals are termed amygdules and tho 

 struct urc amygdaloidal. 



I'ui. 387. Geode studded with Quartz Crystals. 



Pisolitic. Spherical forms with concentric shell-like structure, as 

 in some calcites from Freiburg, Saxony, Fig. 388. When the indi- 

 vidual spherules are small, the mass resembles fish roe, or oolitic. 



I i... :W8. Oolitir Calrito. Carlsbad, Bohemia. 



