NAPA COUNTY
Aetna mine - 1 mile NW of Aetna Springs, Mayacmas district. cinnabar, mercury, metacinnabar.
Calistoga silver mines [includes Palasades mine, Silverado mine] - 3 to 6 miles north of Calistoga. acanthite, cerargyrite, silver.
Redington mine [also known as Knoxville mine, Boston mine], [and Manhattan mine] - north & south of Knoxville, Knoxville district. botryogen, calomel, cinnabar, coquimbite, epsomite, fibroferrite, hohmannite, magnesiocopiapite, marcasite, melanterite, metacinnabar, redingtonite, siderite, stibnite, voltaite.
NEVADA COUNTY
Grass Valley district [includes Idaho-Maryland mine, Pennsylvania mine, Empire mine, North Star mine] - Grass Valley. arsenic(E), gold, hessite(I-M), naumannite(I-M), petzite(I-M), pyrite.
Nevada City district [includes Nevada City mine, Providence mine, Queen mine] - west of Nevada City. altaite(P), arsenopyrite(Q), gold, hessite(NC).
Red Ledge mine - south of Washington, Washington district. clinochlore (kammererite), copper, galena, gold, magnesiochromite, pyrite, quartz, redledgeite, stibnite, uvarovite.