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]Sl o. 4 
CALOGUE OE THE MINERALS AND EOSSILS COLLECTED ON THE 
SURVEY. 
Name. 
Locality. 
Benicia, California_ 
Sandstone_._„ .___. „ _ ._ 
San Francisco, California__ 
Santa Barbara, California_ 
__do___.....____ . _____ 
San Pablo bay, California-_... 
Volcanic tufa___ 
Volcanic conglomerate.......... ............................._.... 
_do_do__ 
_do_do_ 
Scoria in conglomerate_„_ 
_do_do_ 
Blue limestone_ 
_do__do.___ 
Calcareous tufa________ 
Near Benicia_ _ _ 
Tufaceous trap___ 
Hills west of Suisun hay__ 
Granite_ 
Near Sonoma, California_ 
Cellular trap_ 
Near Fort Reading.. 
Pit river, lower canon_ 
_do.___ 
Pit river, upper canon__ 
Alumina—silicious marl, pure white__ 
Pit river, low'er canon .... . 
_do_do_ 
_do_do_pure white___ 
Pit river, above upper canon_ 
Green sandstone......... 
20 miles above upper canon, Pit river. 
Lassen’s butte, California.... 
Trachyte, containing crystals of hornblende and glassy felspar... 
_do_decomposing into felspathic sand, reflecting the sun like snow_ 
Sandstone, cream colored and friable, forming hlulfs capped with trap. 
Alumina—silicious marl, pure wdiite___ 
Shores of Ehett lake___ 
Plain about Lower Klamath lake_ 
Scoria in sandstone (25)___ 
Natural Bridge, Lost river, O. T_ 
Pumice, coarse_____ 
Lassen’s butte, California_ 
Epidote, with crystals of hornblende_ _ 
Upper Tit river, California_ 
Gray syenite_________ 
Upper Pit river__ 
Gray norplivry__ .. _... .. ... _ 
... do_. 
Greenstone_________ 
_do_ 
Massive quartz, with epidote_ _ _ 
_do____ 
Black obsidian, in balls_____ 
_do____ 
Pumice, from Pumice plain..... 
North of Upper Klamath lake_ 
