Vancouver Island Dallasite

Sounds like a very successful outing! Tell me though, a friend of mine picked up several pieces of the rock below while on a trip to Van. Island a couple years back, said they were pretty rare finds on the beach. I tumbled them for him over the past year or so. We never did figure out exactly what it was... but from your pics, do you figure this is perhaps dallasite? Or something else entirely?
-Don

Rollingstone,

That particular rock/pic is a bit of a tough call. Like I said, there are simillar looking formations that are not dallasite. I am still trying to find the most definative way to categorize it as such. I know when a rock I find definately IS dallasite by the characteristic formations but apparently those formations can differ in appearance considerably.

In my pic, you can clearly make out the greenish patches that are slightly darker in the center and lighter at the fringe, surrounded by the dark almost bluish material that blends into the white quartz.

In your pic, I can clearly make out patches that are lighter green in the middle and have a darker fringe that goes right into white quartz so I am inclined to believe that particular piece is probably NOT dallasite.

I leave a lot of "maybe" stones on the beach. I don't pick one up unless i'm convinced it has to be dallasite. I know I have passed over some dallasite that was too small or eroded to have enough formations left in it to tell for sure. There's lot's of bassalt and quartz mixtures that kind-of look like it.

Maybe somebody else on the board knows of a better characterization for the dallasite endemic to the South Vancouver Island region and if other sources are known to have variations of it, like rhodonite which is found here differs somewhat from other rhodonite sources.