🔎 UNIDENTIFIED Tucson Arizona find

[rockcollect]

I have bought this rock online which was found in Tucson Arizona and has different lithologies and a black vein. What kind of rock is this?

 

[blauer]

I'll say it. It's Leaverite.

 

[ToddsPoint]

It looks like your user name. Basalt.

 

[rockcollect]

It looks like your user name. Basalt.

oke thanks. And yes that's why i bought it, because it looked like basalt but very cool with those crystals and lithologies.

 

[rockcollect]

It looks like your user name. Basalt.

do you know the type of basalt? And what is that black vein in it?

 

[ToddsPoint]

Rounded smooth nodules like that are usually pillow basalt. Formed underwater.

 

[rockcollect]

Rounded smooth nodules like that are usually pillow basalt. Formed underwater.

AI-overzicht



While basalt is common around Tucson, especially in the form of volcanic rocks from Sentinel Peak ("A" Mountain), pillow basalts—which form from underwater eruptions—are generally not a typical or well-documented feature of the immediate Tucson area.
Pillow basalts are typically found in areas that were historically submerged under deep water.

• Arizona Examples: Pillow basalts and related volcanic structures are found in older Proterozoic rocks in other parts of Arizona, such as in the Yavapai County region.
• Tucson Geology: The volcanic activity in the Tucson Mountains primarily involved ash-flow tuffs and subaerial (land-based) lava flows, rather than deep-sea eruptions.
• Basalt Varieties: The vesicular (bubble-filled) basalt found in Tucson, often used in local masonry, was formed on land, not in water

 

[rockcollect]

Pillow lava - Wikipedia

en.wikipedia.org

 

[rockcollect]

wow, does nobody know the name of this type of rock? if it is found in tuscon arizona, someone has to have found something similar