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Author Topic: Pink Brecciated Mookaite Jasper  (Read 4574 times)

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WingnutAndAPrayer

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Pink Brecciated Mookaite Jasper
« on: February 16, 2024, 03:45:19 AM »

Just enough to do something with. This material seems opalized and the matrix is arkose (sandy-grainy) but ultra glassine.

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Enchantra

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Re: Pink Brecciated Mookaite Jasper
« Reply #1 on: February 16, 2024, 05:48:49 PM »

That is a sweet piece to play with.  The color striations are gorgeous.

WingnutAndAPrayer

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Re: Pink Brecciated Mookaite Jasper
« Reply #2 on: February 19, 2024, 09:46:09 PM »

Yes! Lots of nuanced tones.
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lithicbeads

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Re: Pink Brecciated Mookaite Jasper
« Reply #3 on: February 21, 2024, 04:06:01 PM »

Mookite is a radiolarian quartz which can change to opal if it is in contact with water. Mookite will cause immense amounts of bubbling and frothing if a lot of water is p[oured on it when it is very dry acting exactly like a hydrophane opal.t is probably an opal -quartz mix.
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WingnutAndAPrayer

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Re: Pink Brecciated Mookaite Jasper
« Reply #4 on: February 23, 2024, 10:23:50 AM »

Thanks for the knowledge! It feels and looks very similar structurally to the diagenetic meta-cherts I find in NW Montana that precipitated from bacterial mats. Low grade Opal-CT? Or just half-baked? Y'all I've finally made the transition to an interest in silicates beyond the world of agates and that rabbit hole goes deeeep.
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