Tag: ᴛʜᴇ ᴜɴᴋɴᴏᴡɴ ᴀᴜᴛʜᴏʀ ᴏғ 𝟹-ʙɪʟʟɪᴏɴ-ʏᴇᴀʀ-ᴏʟᴅ ᴋʟᴇʀᴋsᴅᴏʀᴘ sᴘʜᴇʀᴇs

Klerksdorp spheres are small objects, often spherical to disc-shaped, that have been collected by miners and rockhounds from 3-billion-year-old pyrophRead More…