Slope Point Diversity, 25 Recently Polished Slope Point Stones: Part Three – Stones 17 to 25

This Series of Posts features Slope Point stones from a recently completed 3lb barrel. The first Post featuring Stones 1 to 8 can be found here. The order of presentation of stones is random. Many of them are likely to be rhyolite but I am unsure about the identification of some of them.

Stone 17 is a purple rhyolite, 4.5 cm long:

Stone 18 is a brown rhyolite, 3.5 cm long:

Stone 19 is a black rhyolite, somewhat similar to Stones 7 and 14 (see previous Posts):

Stone 20 is a white and caramel stone, I am unsure of its identification – other light-coloured stones include Stones 7 and 15:

Stone 21 is very different in colour – green – from the other stones in this Series. I suspect it has volcanic origins but am unsure of its identification.

Stones 22 , 23, 24 and 25 are the smallest stones in the batch. Stones 22 and 23 are each 2.5 cm long while Stones 24 and 25 are only 2 cm long each. Stone 22 might be rhyolite:

Most of the surface of Stone 23 failed to polish but there are some fascinating patterns in it:

Stones 24 and 25 are both rhyolite, in my view, with Stone 25 especially showing some nice flow banding:

I continue to be fascinated by the diversity of Slope Point stones which are quite different from the stones I find at the likes of Gemstone Beach and Kakanui.