[Rockhounds] what exactly is dalmation stone, anyways?

[Axel Emmermann]

Tim, 

I think you're talking about agate, var. Onyx.

Some marbles have black spots too but only the agate is true onyx.

Axel 

> -----Oorspronkelijk bericht-----
> Van: rockhounds-bounces at lists.drizzle.com 
> [mailto:rockhounds-bounces at lists.drizzle.com] Namens Tim Jokela Jr.
> Verzonden: vrijdag 29 februari 2008 18:15
> Aan: Rockhounds at drizzle.com: A mailing list for rock and gem 
> collectors
> Onderwerp: [Rockhounds] what exactly is dalmation stone, anyways?
> 
> Rock mentioned dalmation stone, which has long intrigued me.
> 
> Seldom have I seen such a curious material, with small black 
> spots, fairly uniform in size, scattered evenly throughout an 
> off-white, slighly yellowish matrix. The black spots have no 
> xl form, so they aren't phenocrysts of augite or something, 
> and they're very evenly distributed. Hard, tough, takes a 
> good polish. Reportedly from Mexico.
> 
> Anybody know what the stuff is?
> 
> T 
> 
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