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Volcanic Rock

Leucite crystal from volcanic rock showing polysynthetic lamellar twins formed by the cubic- tetrago (40x)| Dr. Michael M Raith

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Greenstone -- (Michigan's state gem) was formed in gas bubbles within basalt. Basalt is a volcanic rock, formed in Michigan in part during the Midcontinent Rift approximately one billion years ago. It is found more in the western Upper Peninsula, MI, USA

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"...is people excell at energy weap..." -fragment of recording salvaged from gray box

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Sedimentary layers with bands of hematite, magnetite (gray/black), and jasper (red) in Precambrian banded iron formations (BIFs) of northern Michigan.

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...moss growing out of lava rock // Thriving In the Midst Of Adversity! As foretold in the Bible, we are living in “critical times hard to deal with.” (2 Tim.3:1) Family turmoil, health problems, financial stresses are just some of the obstacles that may afflict you. Bible Education in > 700+ languages >> Free www.jw.org >> Something for everyone!

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De l'art gratuit dans la nature. La lave d'un volcan crée des structures et des plis comme des drapés qui peuvent stimuler l'inspiration. // Free and natural art found in nature. Lava from a volcano creates structures and drape-like folds that can be quite inspiring.

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So pretty! But seriously, how do people take these kinds of pictures without being burnt!?!?!

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Geyser Opal from Spencer Idaho U.S.A Spenser Opal was deposited in volcanic rocks app 4 million years ago by geysers. #opal

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Sanidine crystal from Itrongay, Madagascar. Sanidine is the high temperature form of potassium feldspar. Sanidine most typically occurs in felsic volcanic rocks such as obsidian, rhyolite and trachyte.

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Hellnar Arch, Iceland is an ancient fishing village and is known for spectacular rock formations on its beach. If you're into volcanic rocks, this is the place for you. by jamiefg

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