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Pyrolusite from
Vann Ranch prospect (Van Ranch Middle Creek; Black Rock; Grizzly Canyon prospect), Vann, Lake Co., California, USA

Description
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:Trask, Parker Davies (1950) Geologic description of the manganese deposits of California. California Division of Mines Bulletin 152, 378 pp.: 98; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 164.
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Vann Ranch prospect (Van Ranch Middle Creek; Black Rock; Grizzly Canyon prospect), Vann, Lake Co., California, USA
Nearest other occurrences of Pyrolusite
15.7km (9.7 miles) Phillips Mine (Grand View Mine; White Rock Mine), Phillips Ranch, Laurel Dell, Lake Co., California, USA
16.6km (10.3 miles) Unnamed Cu-Mn occurrence, Red Mountain, Red Mountain District, Mayacmas Mts (Mayacamas Mts), Mendocino Co., California, USA
19.0km (11.8 miles) Wild Devil Mine (Waldteufel; Waldteufel Mine), Potter Valley area, Coastal Range, Mendocino Co., California, USA
19.1km (11.9 miles) Bevins-Busch Mine (Bevins-Busch deposit; Lee Mine; Potter Valley Mine), Potter Valley area, Coastal Range, Mendocino Co., California, USA
20.1km (12.5 miles) Redwood Valley, Mendocino Co., California, USA
24.7km (15.3 miles) Foster Mountain Mine (Foster Mountain deposit; Memorial; Busch; Independant; Lucky Boy), Hearst, Coastal Range, Mendocino Co., California, USA
26.1km (16.2 miles) Harms prospect, Hearst, Coastal Range, Mendocino Co., California, USA
27.8km (17.3 miles) Dorn prospect, Hearst, Coastal Range, Mendocino Co., California, USA
33.6km (20.9 miles) Consolidated No. 7 claim, Hearst, Coastal Range, Mendocino Co., California, USA
34.1km (21.2 miles) Black Diamond North Star Mine (Black Diamond Mine), Sugarloaf Hill, Coastal Range, Glenn Co., California, USA
34.6km (21.5 miles) Mrs. Knight prospect, Fair Oaks, Coastal Range, Mendocino Co., California, USA
36.4km (22.6 miles) Dow prospect, Clear Lake Oaks, Sulphur Creek District (Sulfur Creek District; Wilbur Springs District), Lake Co., California, USA
36.5km (22.7 miles) K. B. No. 1 prospect (K.B. No. 1 claim), Elephant Hill, Coastal Range, Glenn Co., California, USA
37.4km (23.3 miles) Brown and Moore prospect, Sugarloaf Hill, Coastal Range, Glenn Co., California, USA
37.4km (23.3 miles) K. B. No. 4 claim, Sugarloaf Hill, Coastal Range, Glenn Co., California, USA
38.1km (23.7 miles) Stonyford, Coast Ranges, Colusa Co., California, USA
38.7km (24.1 miles) Rattlesnake Mine, Sugarloaf Hill, Coastal Range, Glenn Co., California, USA
42.3km (26.3 miles) Callizo prospect, Duncan Springs, Coastal Range, Mendocino Co., California, USA
44.9km (27.9 miles) B. S. No. 1 prospect (B.S. No. 1 claim), Alder Springs, Coastal Range, Glenn Co., California, USA
45.5km (28.3 miles) Rowlison prospect, Longvale, Coastal Range, Mendocino Co., California, USA
49.2km (30.6 miles) Elliott prospect (Elliot prospect), Caldwell Pines, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA
49.8km (30.9 miles) Shaw Mine, Shaw Ranch, Cloverdale, West Mayacmas District, Mayacmas Mts (Mayacamas Mts), Sonoma Co., California, USA
49.9km (31.0 miles) Rose Mine, Longvale, Coastal Range, Mendocino Co., California, USA
49.9km (31.0 miles) Hummingbird prospect, Alder Springs, Coastal Range, Glenn Co., California, USA
51.7km (32.1 miles) Wishbone claim (Graham claim), Longvale, Coastal Range, Mendocino Co., California, USA
57.5km (35.7 miles) M. G. Morrison prospect (Morrison prospects), McClure Place, Coastal Range, Mendocino Co., California, USA
60.4km (37.5 miles) Big Bend claims (Big Bend deposit), McClure Place, Coastal Range, Mendocino Co., California, USA
64.5km (40.1 miles) Long Mine (Earl W. Long prospect; Earl W. Long deposit; Happy Four; Happy Hour; Last Chance), Woodman, Coastal Range, Mendocino Co., California, USA
67.8km (42.1 miles) Two Trees prospect (Two Trees deposit), Leech Lake Mountain, Reeves Place, Coastal Range, Mendocino Co., California, USA
68.0km (42.3 miles) Boyer Mine (Wheeler Mine; Shanks and Copps), Warm Springs Dam, Coast Range, Sonoma Co., California, USA
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