What it probably is, Purple stuff? No, not fluorite.. Options

[NewRockHounder]

After doing some book research I came upon "Purpurite," based on the description provided, IE occurs as crusts, compact, granular masses, brittle, slightly powdery consistency - it 99.8% matches what I have. Why did I leave off .2%? - Because, I don't have any means, currently, to do a scratch test. Book says it will leave a dark red streak.

A ceramic tile would work for a scratch test, right? Just to remind ya's what the deuce I'm talking about, provided some pics, again. (The first pic looks different then the rest, because it's sprayed with clear coat as not to crumble.. more so than it had)

[Coalbunny]

Well dave, they are. Just as Chalcanthite is. Chalcanthite is a hydrous copper oxide, secondary replacement (of course). It's blue and commonly used as a pigment. You'll find it around areas where there is copper, and you'll see what looks like a blue stain that follows the water, like in tunnels or outcrops, cliffs, etc. That is toxic if you consume it, but a common way to tell what it is is by taste testing it. It tastes like a sweet-alkaline taste. I've taste tested that a number of times and ain't died yet. Also flame tested arenopyrite a few times and....yep. I lived.

Just don't taste test or flame test any suspected mercury ores. Not only is it a bad idea, but I hear they taste/smell awful.