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originally posted by: funbox
a reply to: ArMaP
no ,proffer it up as an explaination to why the thing is of varying material's to the centre
youve read the body of text , what nuggets of info do you digest ?
to me it reads 95% fluff of repeated non relevant information
Maybe because they do not really know why.
They said the main components of the rock and a possible way for their presence, what more do you want?
originally posted by: funbox
nothing wrong with them typing that either
interesting to think that one of the most interesting things they've found so far has such little said about it,
whats type of environments do geode's develop in
Geodes (Greek γεώδης - ge-ōdēs, "earthlike") are geological secondary structures which occur in certain sedimentary and volcanic rocks. They are themselves of sedimentary origin formed by chemical precipitation. Geodes are essentially hollow, vaguely spheroid to oblate masses of mineral matter that form via either of two processes:
by the filling of vesicles (gas bubbles) in volcanic to sub-volcanic rocks by minerals deposited from hydrothermal fluids or
by the dissolution of sedimentary nodules or concretions (that were deposited syngenetically within the rock formations in which they are found) and partial filling by the same or other minerals precipitated from diagenetic water, groundwater or hydrothermal fluids.
originally posted by: funbox
a reply to: ArMaP
even if it was a geode ?
ide bet you would be happy with a find like that
finding something rock like yet hollow must be of interest from a geological point of view too , are they regularly found on the *mars*surface/ bottom of old lakes on earth?
Some geodes are made in the conditions that are supposed to have been present some thousands of years ago on that place, a sedimentary area with water.
Examination of Pinnacle Island revealed high levels of elements such as manganese and sulfur, suggesting these water-soluble ingredients were concentrated in the rock by the action of water