Bulletin, Issue 78

Front Cover
California State Mining Bureau, 1918 - Mines and mineral resources

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Contents

ILLUSTRATIONSContinued
2
LETTER OF TRANSMITTAL _______________________________________________
3
MINES AND GEOLOGY
5
INTRO nfCTION _______________________ ___________________________________
9
CHAPTER 2
17
MERCTLRY MINERALS ____________________________________________________
25
MINES AND PLANTS ALPHABETICALLY BY COUNTIES
35
Photograph Page 11 Exfoliation of basalt at Sulphur Bank mine
65
Fiftyton Scott furnace and condensers at Phoenix Mines 19U 41 I retorts at Etna mine
212
JohnsonMcKay retort showing circulation system
213
Charging a JohnsonMcKay retort at the Patrlquln mine
214
A battery 12 pipes of JohnsonMcKay retorts at the Klau mine
215
Livingston furnace under construction at La Joya mine
216
4b Nuite coarseore furnaces at the Bella Union mine
223
Livermore furnace at Cloverdale mine
226
Ray electric oilburners on Livermore furnace at Cloverdale mine
227

Hot springs In bottom of Western Cut at Sulphur Bunk mine
66
Patrlquln mine near Parkfleld
74
Bins and furnace plant at the vEtna mine
79
Ftirnaces at La Joya mine
87
Dumps of lowgrade ore at Oat Hill mine
90
IT Serpentine surface near New Idria
94
is Rotary furnace Aurora mine _
100
Old and new prospect tunnels Florence Mack mine__
104
Characteristic outcrops at Los Picachos Peak Hernamlez ml it
106
Panoramic view of New Idrla mine plant and town
108
Flashlight view In squareset slope New Idria mine
111
Ore trains at New Idrla mine
113
Xtw Idria mine showing open cuts and dumps
114
San Carlos mine open cut above No 2 level
116
Blowr and stark from lineore furnace New Idrla mine
118
Detail of tramway and orebin Cambria mine
130
Kid coarseore quicksilver furnace erected 1873 at Keystone mine
134
2a Itlau mine showing old slopes and drifts exposed by later opencut opera tions _ _
136
2S Opn cuts at Oceanic mine
141
Microphotograph of diorltegabbro at the Oceanic mine
142
Plant of Oceanic mine
143
Tramway unloading terminal at Oceanic mine 14
145
Open cut at MilburnMrAvoy Los Prlitos mine 1 11
158
Cottrell dust precipltator or hot treater at Senator mine
165
33a New 90ton Scott furnace at Senator mine
166
St Johns mine near Vallejo
177
doverdale mine
184
reat Eastein mine near Guerneville 1SS 3 Sexrates mine surface plant
194
PART II
206
Side view of 50ton Scott furnace at Oceanic mine _
229
Quicksilver In earth and sand under site of old furnaces at New Almadcn
242
Rotary oredrier above Scott furnace at Socrates mine
247
New rotary quicksilver furnace at New Idria mine __ __
248
Herreschoff multiplehearth furnace at Senator mine
251
Top or dryinghearth of Herreschoff furnace
252
Cottrell precipltator or cold treater at Senator mine
253
Scott furnace and condensers at Klau mine
254
Ore drier at St Johns mine
255
Condensers at New Mercy Pacific mine
257
Barrel condensers at New Idria mine
258
Round wooden condensers at New Idrla mine
259
Rectangular wooden condenser and flue at Oceanic mine
260
Si Cundensur pipes of JohnsonMcKay retorts at Patriquln mine
261
Condenser system on JohnsonMcKay retorts at Sulphur Bank mine
262
H4 65 Condenser Hues at New Idrla mine __
265
Cleaning up one of the new wooden condensers at New Idrla
274
Soot mill at New Idria mine
275
QUICKSILVER ASSAYS
277
Whltton quicksilverassay apparatus showing component parts
283
Whttton quicksilverassay apparatus assembled
284
CHAPTER 2
286
Hyde Slide laboratory flotation machine _
300
PRACTICAL APPLICATIONS OP CONCENTRATION TO QUICKSILVER ORES
329
ESTIMATES OF CONCENTRATION COSTS
349
RE CALIFORNIAN OCCURRENCES ON GEOLOGY MINERALOGY
358
INDEX
367
line 3 under CALOMEL should read chlorine 15 1 o
378

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