particles whose outlines range from easily resolvable to nonresolvable with 

 binocular microscope at magnifications ordinarily used by geologists. Particles 

 rarely exceed 0.5 mm in diameter. 



Clay: Fine material of clay size. 

 Clustered: See "oolith." 

 Concentric: See "oolith." 



Dolomold: Rhombohedral cavities in an insoluble residue. (Generally due 

 to the solution of euhedral dolomite or calcite crystals.) 

 Dolomoldic: Containing dolomolds. 



Skeletal with dolomolds: Residues with rhombohedral openings 

 in which the constituent material comprises less than 25 percent of 

 the volume of the fragment. Openings vary from microscopic to 

 megascopic. 



Abundant dolomolds: Residues with rhombohedral openings 

 with the constituent material comprising from 25 to 75 percent of 

 the volume of the fragment. Openings vary from microscopic to 

 megascopic. 



Scattered dolomolds: Residues having rhombohedral openings 

 in which constituent material comprises more than 75 percent of the 

 volume of the fragment. Openings vary from microscopic to mega- 

 scopic. 

 Dolomorphic: Used for describing residues where there has been replace- 

 ment or alteration of dolomite or calcite by an insoluble mineral which assumes 

 the crystal form of the soluble mineral, thus filling a dolomoldic cavity. 

 Drusy: Clusters or aggregates of crystals, generally incrustations. 

 Euhedral: Doubly terminated crystals; unattached. 

 Free: See "oolith." 



Granular: Chert; compact, homogenous; composed of distinguishable re- 

 latively uniform-size grains, granules, or druses; uneven or rough fracture sur- 

 face; dull to glimmering luster; hard to soft; may appear saccharoidal. (This 

 type is frequently referred to as "crystalline.") 



Granulated: Grains or granules partly cemented or loosely aggregated; 

 saccharoidal; grades from angular to drusy; fine to coarse; particles rarely 

 larger than 0.5 mm in diameter. 



Lacy: Residues with irregular openings in which the constituent material 

 comprises less than 25 percent of the volume of the fragment. 



Massive: See "oolith." Used also to include fine or coarse granular 

 anhydrite or gypsum. 



Mottled: Residue fragments with two or more colors or different material 

 interspersed and irregularly shaped with the boundaries between either sharp 

 or gradational; often appears flocculated; grades into speckled residue. 

 Oolite: Composed of an aggregation of ooliths. 



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