Petrified wood (chalcedony) with quartz crystals growing in the voids. The original woody structure has been replaced by silty material in some areas. Likely from the Drumheller area, not from the Bow Valley. From the Cretaceous period.
Petrified wood (chalcedony) with quartz crystals growing in the voids. The original woody structure has been replaced by silty material in some areas. Likely from the Drumheller area, not from the Bow Valley. From the Cretaceous period.
Silicified wood, growth rings very well exposed and displayed. One side is weathered and one side is cut, displaying the rings more clearly. All the woody cells have been replaced by silica. Minor fracturing. From the Cretaceous period. This specimen is typical of the petrified wood found in the Ro…
Silicified wood, growth rings very well exposed and displayed. One side is weathered and one side is cut, displaying the rings more clearly. All the woody cells have been replaced by silica. Minor fracturing. From the Cretaceous period. This specimen is typical of the petrified wood found in the Rocky Mountain House and Edmonton areas.
Silicified wood. Almost completely chalcedony. Well defined growth rings, wood structure is very well preserved. This specimen is typical of the petrified wood found in the Rocky Mountain House and Edmonton areas. From the Cretaceous period.
Silicified wood. Almost completely chalcedony. Well defined growth rings, wood structure is very well preserved. This specimen is typical of the petrified wood found in the Rocky Mountain House and Edmonton areas. From the Cretaceous period.
Petrified wood. Fractures are filled with quartz (variety agate). Preservation is very good, growth rings are well exhibited. Silicified wood, less replacement than specimen 112. 03.1036. Botryoidal surface texture in some areas.
Petrified wood. Fractures are filled with quartz (variety agate). Preservation is very good, growth rings are well exhibited. Silicified wood, less replacement than specimen 112. 03.1036. Botryoidal surface texture in some areas.
Petrified wood, gritty sandy texture. Calcite is replacing many of the wood cells. Wood structure not well defined. From Cretaceous/Jurassic period. Probably from the Bow Valley, Kootenay formation. Pockets of siderite [calcium carbonate iron combination - FeCa(CO3)2] crystals.
Petrified wood, gritty sandy texture. Calcite is replacing many of the wood cells. Wood structure not well defined. From Cretaceous/Jurassic period. Probably from the Bow Valley, Kootenay formation. Pockets of siderite [calcium carbonate iron combination - FeCa(CO3)2] crystals.
Specimen of petrified wood. Fractures have been filled in with chalcedony and one end has botryoidal growths of chalcedony on the surface. Lichen growing on surface.
Specimen of petrified wood. Fractures have been filled in with chalcedony and one end has botryoidal growths of chalcedony on the surface. Lichen growing on surface.