calcite

Hi. I Found this mineral inside of a concretion. The minerals that I typically find inside the concretions local to my area are calcite and Aragonite. This is the only one I have ever opened that looks like this. Any ideas? Thank you. Location: Orange County, California

I went to an estate sale and found these sitting outside they weren't even being sold I inquired about them and told them that if they wanted to sell the rocks that were outside in the rosebush area I would give them ten bucks for all three of them this is what I got can anyone tell me exactly...

I believe this is calcite, but just wanted to get other opinions. Milky white. Filling cracks in Mississippian (or maybe Pennsylvanian?) limestone in the Wasatch Mountains in Utah. That's my stubby toe in the second pic for scale. :) Thanks in advance!

I could not navigate back to where it said identifications could be made with photo. I figured I would start here. Can anyone tell me if this is orange calcite and also what are the green crystals formed within it? Peridot, diopside?? It looks light in color to be diopside... Any insight...

Some of the rods are loose like loose teeth. Others are solid in the calcite. I think there's a name for them, but don't know what it is.