A nodule of stone, containing a cavity, lined with crystals or mineral matter.
The cavity in such a nodule.
Geode - A hollow or partly hollow, hard, globular body, usually from 2.5 to 30 cm or more in diameter found in certain limestone beds and, rarely, in some shale beds, characterized by a thin and sometimes incomplete outermost layer of chalcedony, by a cavity that is partly filled with a lining of inward-projecting crystals deposited from solution on the cavity walls, and by evidence of growth by expansion in the cavities of fossils or along fracture surfaces of the shells.
A hollow nodule of rock lined with crystals; when separated from the rock body by weathering, it appears as a hollow, rounded shell partly filled with crystal.
(mineralogy) a hollow rock or nodule with the cavity usually lined with crystals
a cavity in a rock which is lined with quartz crystals projecting towards its Centre
a hollow globular rock that is lined with inward-facing crystals
a hollow rock lined on the inside with crystals
a hollow round stone, usually filled with crystals
a rock that looks unremarkable on the outside, but when split open reveals a beautiful heart of sparkling crystals
a rock that you can crack open to reveal brilliant crystals inside
a rock, with a rough and insignificant looking exterior, that is either partially or completely filled with crystal
a rock with a small cavity inside, lined with sparking crystals
a rounded mass of rock that has a cavity lined with crystals or minerals
a round hollow nodule containing earthy matters, sometimes quartz , sometimes agate
a sphere or oval shaped rock which contains a hollow cavity lined with crystals
_A rock concentration, rounded end often hollowwhich contains crystals.
A hollow, generally spherical structure, lined with inwardly-projecting crystals.
a hollow rock (usually spherical) with crystals lining the inside wall.
Roundish cavity of crystalized minerals in a sedimentary rock.
A hollow rock in which crystals have formed inside the cavity
Hollow rock that is filled or partially filled with crystals.
A hollow rock cavity usually containing some form of one or more gemstones. Amethyst and Peridot are examples of gemstones found in geodes.
A nodular stone containing a cavity usually lined with crystals or mineral matter.
hollow, globular bodies subspherical shape clay film between geode wall & the enclosing limestone matrix which is like a skin or crust an outer chalcedony layer an interior drusy lining of inward projecting crystals evidence of expansion or growth slow deposition of groundwater causes crystals to grow estimated it takes 240 million years to form geodes form either in sedimentary rock or in basalts/andesites hollows appeared in sedimentary rocks either because of animal burrows, tree roots or mud balls word "geode" derived from Latin meaning "earthlike", rounded shape found in USA: Montana, Indiana, Iowa, Illinois, Pennsylvania (Lancaster Co. goethite geodes), Tennessee (Loretto), Oklahoma (Comanche County etc.), Michigan (Houghton), Dugway geodes, Colorado (Chaffee County ,Marshall Pass), Hauser Geode Beds, California amethyst geodes from Artigas, Uruguay or near Lajeado, Rio Grande Do Sul, Brazil
A hollow rock cavity, usually containing some form of one or more gems. Two excellent examples of gems often found in geodes are amethyst and peridot.
A geode is a rock whose crystal-filled interior can be hollow or filled. The crystals that form within the mineral crust of the geode is called druze. From the outside, geodes look like rounded, but otherwise ordinary rocks.
Cavities in clay or other formations which have been incrusted with a wall of quartz or other mineral and which (later) separate as a hollow mass, the interior walls of which are usually studded with crystals.
Generally, a plain looking stone that has a cannonball shape with a crystal lined center that is often hallow.
A hollow nodule, the cavity of which is commonly lined with inward pointing crystals of quartz, or other minerals.
a cavity, usually in a sedimentary rock, lined with crystals or other mineral matter; a rock containing such a cavity. [AHDOS
