Re: edit
yes, the mind of Silica.. homeopaths of the best kind often gives me the keys. And thanks to brother NP that trigger the ON button once in a while.
"It is more difficult to clearly demonstrate the corresponding characteristics between a mineral and the characteristics of the type of patient who requires Silica, than with a plant or an animal. Yet there are instances where these characteristics may be seen. Douglas Gibson (p 469) reminds us that compounds of Silica are widely used in modern industry because of their lack of reactivity. He states that they are water-repellent and resistant to oxidation, and that therein lies a commonality with Silica patients: they are characterized by their extreme inertia, lack of fire and their poor resistance.
He writes that
“The grain of sand is content to drift, subside and settle motionless on the surface of the desert or on the seabed, away beneath the waves of bother and strife. The Silica patient just wants to sit around or lie down in apparent unconcern. But if provoked he may blow up over trifles and become quite violent, even as the sand of the desert, if stirred up, may become a whirl of violence and destructiveness”
http://stardazer.wordpress.com/article/homeopathy-silica-2w8rtdzvy6mzo-8/
Silica is also interesting for this forums as it has to do with ailments after vaccination, sluggish glands, coldness, lack of circulation etc. As there are no fire here.
EDIT; the funny thing is that flint can be used to make fire..yes.
I also like the connection between the physical form of flint (silica is a major component) and the Splinter-like sensation often found in this remedy.