AMYGDALOID n.
iety of trap or basaltic rock, containing small cavities, occupied, wholly or in part, by nodules or geodes of different minerals, esp. agates, quartz, calcite, and the zeolites. When the imbedded minerals are detached or removed by decomposition, it is porous, like lava.
CONCRETION n. 2 definitions
A mass or nodule of solid matter formed by growing together, by congelation, condensation, coagulation, induration, etc.; a clot; a lump; a calculus. Accidental ossifications or deposits of phosphates of lime in certain organs . . . are called osseous concretions. Dunglison.
PHOSPHATIC a.
Pertaining to, or containing, phosphorus, phosphoric acid, or phosphates; as, phosphatic nodules. Phosphatic diathesis (Med.), a habit of body which leads to the undue excretion of phosphates with the urine.