Mountain Green Granite Architectural Stone (Metanorthosite) Identified

This video features the igneous rock, with the trade-name, Mountain Green Granite (using 360 degree photography). This rock is quarried by the Cold Spring Granite Company from Jay, New York State, USA. Note that the building stone industry uses the more generalized term of "granite" for essentially all coarse-grain volcanic rocks, and for many metamorphic gneissic rocks too. Geologists have subdivided the general term of granite, which originates from around 1100 AD, into many other names. The different technical names relate to variations in rock chemistry and mineralogy. Technically this green granite is a metanorthosite. Anorthosite is an intrusive rock that is an uncommon rock type on Earth. However, this rock also has been affected by metamorphism--causing foliation (or layering) to the mineral structure.
I do not know much about this stone. It is a popular building stone because of its distinctive color, and consistent grain size. This metanorthosite has distinctive green labradorite minerals, and also contains augite (pyroxene), and garnet. It is from the Marcy Anorthosite in the Adirondack Mountains, and has been dated 1.155 billion years old. Additionally, the rock type at the quarry, is architecturally graded into seven types of colors. A more garnet-rich variation of this stone (from the same quarry) was used as the cornerstone of he Freedom Tower (c. 2004), in the World Trade Center in New York City, New York, USA [reference: www.flickr.com/photos/jsjgeol...]. Additional structural and architectural information is posted here: www.coldspringusa.com/buildin...
Hello Rock People! This is Dave the Geology Dude!
It is a celebration video today because the cumulative video views on GeologyDude have reached 100,000! The stone turtle--discussed in this video--walked many small steps to eventually reach a significant achievement! This is so awesome! I sincerely thank everyone for watching this channel. Don't forget that Geology isn't rocket science--it's Rock Science! Please "like" and subscribe to this CZcams channel!
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Hello Rock People! This is Dave the Geology Dude! Thank you all for 100,000 cumulative views to this CZcams channel! Please let me know channel suggestions and comments here. Thanks again!

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🎉Congratulations 🎊🍾 Thanks for the shot out Dave ! I think next year you may need to do a hare 🐇 instead a turtle 🐢. Thank you for all the hard work you put in for us !

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You are welcome! And thanks again for your ongoing encouragement and support!