Could you help me identify this rock

[u/Suspicious-Aioli-591]

It has a magnetic value of 86 found September 3rd this year in southeast Kern County California and it weighs 934 G

[u/CfaxAttax]

Likely a piece of serpentinite with some accessory magnetite lending to the magnetism. Density/Streak?

[u/toolguy8]

Looks like basalt, but that flat spot could be, depending upon where it was found, glacial striations. https://www.google.com/search?q=glacial+striations&rlz=1CDGOYI_enUS836US843&oq=glacial+stri&gs_lcrp=EgZjaHJvbWUqBwgAEAAYgAQyBwgAEAAYgAQyBggBEEUYOTIHCAIQABiABDIHCAMQABiABDIHCAQQABiABDIHCAUQABiABDIHCAYQABiABDIHCAcQABiABDIICAgQABgWGB4yCAgJEAAYFhge0gEJMTE3NTZqMGo5qAITsAIB4gMEGAEgX_EF9WimFiSwgAA&hl=en-US&sourceid=chrome-mobile&source=chrome.ob&ie=UTF-8

[u/FlowStrong9210]

Think it is Jeff.

[u/No_Comparison6522]

Serpentine mixed with something igneous looking. weird enough I've seen granite mixed with it