jasper

Agate is a variety of chalcedony characterized by either transparency or color patterns, such as multi-colored curved or angular banding. Opaque varieties are sometimes referred to as jasper.
Hydrothermal circulation is generally thought to be required in the formation of jasper.
Jasper is a variety of chert formed as primary deposits, found in or in connection with magmatic formations which owes its red color to hematite inclusions.
Jasper is an opaque rock of virtually any colour stemming from the mineral content of the original sediments or ash.
Patterns arise during the consolidation process forming flow and depositional patterns in the original silica-rich sediment or volcanic ash.

random

The First Network Email (openmap.bbn.com)

rockhounding site (unconfirmed)

Deer Creek

tags

mineral

variety of

chalcedony

Wikipedia

Jasper (Wikipedia) Jasper, an aggregate of microgranular quartz and/or cryptocrystalline chalcedony and other mineral phases, is an opaque, impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to iron(III) inclusions. Jasper breaks with a smooth surface and is used for ornamentation or as a gemstone. It can be highly polished and is used for items such as vases, seals, and snuff boxes. The specific gravity of jasper is typically 2.5 to 2.9. Jaspillite is a banded-iron-formation rock that often has distinctive bands of jasper.