Basalt

All I got on Basalt right now
1895 Rand McNally Map showing Basalt on the Carson and Colorado railway
1932 State of NEvada Road map
1969 State road map showing a "rest stop" symbol at Basalt
2001 Stte road map showing Basalt as abandoned.
This is what they're digging up at Basalt nowadays. A closeup of a diatom courtesy the Dicalite Company.