You’ve seen what it looks like after crushing, now see it in its whole form: the Half Dome Granodiorite. This sample is from the equigranular phase of that intrusion (there’s also a porphyritic phase). This sample is from near Olmstead Point along the Tioga Highway. The Half Dome Granodiorite is one of the larger units within the Tuolumne Intrusive Suite in Yosemite National Park.
Explore this and all of my 2010 Deskcrops and Outcrops in Google Earth!