47:
190:
182:
31:
124:
231:, Spanish for "gold pan", is a particular variant of gold pan. Traditionally made of a solid piece of wood, it may also be made of metal. Bateas are used in areas where there is less water available for use than with traditional gold pans, such as Mexico and South America, where it was introduced by the Spanish. Bateas are larger than other gold pans, being closer to half a meter (20 inches) in diameter.
39:
223:
or heavy gauge steel pans are traditional. Steel pans are heavier and stronger than plastic pans. Some are made of lightweight alloys for structural stability. Plastic gold pans resist rust, acid and corrosion, and most are designed with moulded riffles along one side of the pan. Of the plastic gold
168:
In many situations, gold panning usually turns up only minor gold dust that is usually collected as a souvenir in small clear tubes by hobbyists. Nuggets and considerable amounts of dust are occasionally found, but panning mining is not generally lucrative. Panning for gold can be used to locate the
135:
Gold panning is a simple process. Once a suitable placer deposit is located, some alluvial deposits are scooped into a pan, where they are then wetted and loosed from attached soils by soaking, fingering, and aggressive agitation in water. This is called stratification; which helps dense materials,
160:
While an effective method with certain kinds of deposits, and essential for prospecting, even skilled panners can only work a limited amount of material, significantly less than the other methods which have replaced it in larger operation. Pans remain in use in places where there is limited capital
239:
The yuri-ita (揺り板), Japanese for "rocking plate" is a traditional wooden gold pan used in Japan. Unlike other gold pans, it is rectangular in shape with a concave cross section and is sealed off at one end with the other end open. As the
Japanese name implies, the gold is panned with a rocking
140:
will rise upward, allowing these to be washed out of the pan, whereas materials with higher specific gravity, sinking to the bottom of the sediment during stratification, will remain in the pan allowing examination and collection by the prospector. These dense materials usually consist of
152:
process in which portions of paydirt (processed mining material) is analyzed for the amount of gold contained (parts per ton). Assaying is an important aspect of mining, especially for large commercial mining operations. Although gold panning is considered by many an outdoor
215:
Pans are measured by their diameter in inches or centimeters. Common sizes of gold pans today range between 10 and 17 inches (25 and 43 cm), with 14 inches (36 cm) being the most used size. The sides are generally angled between 30° and 45°.
46:
201:
Gold pans of various designs have been developed over the years, the common features being a means for trapping the heavy materials during agitation, or for easily removing them at the end of the process. Some are intended for use with
224:
pans, green and red ones are usually preferred among prospectors, as both the gold and the black sand stands out in the bottom of the pan, although many also opt for black pans instead to easily identify gold deposits.
81:
using a pan. The process is one of the simplest ways to extract gold, and is popular with geology enthusiasts especially because of its low cost and relative simplicity.
476:
946:
362:
Note: Call number 90A469 in four series. Series 1 deal with correspondence 1940 to 1963. SERIES: 5. E.O.C. Ord II: Patents and
Printed Materials.
277:
469:
497:
210:, a former Army officer and co-owner of several mines, patented several pan designs including designs for use with mercury or dry.
576:
571:
462:
850:
189:
112:
206:, include screens, sharp corners for breaking ice, are non-round, or are even designed for use "with or without water".
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1105:
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145:
with whatever stones or dense metal particles that may be found in the deposit that is used for source material.
1110:
162:
257:
181:
314:
745:
913:
881:
832:
485:
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131:
view of print taken by the U.S. Geological and
Geographic Survey of the Territories ~ circa 1874–1879
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30:
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However, the productivity rate is comparatively smaller compared to other methods such as the
1074:
979:
951:
539:
529:
137:
88:, where gold and other precious metals were extracted from streams and mountainsides using
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1024:
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352:. Georgetown University Library, 37th and N Streets, N.W., Washington, D.C., 20057
302:. Sacramento, California: California Division of Mines and Geology. pp. 2–3.
193:
Panning Gold in New Spain, Early
Colonial Period, c. 1535. The pans appear to be
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115:, which has led to panning being largely replaced in the commercial market.
278:
Alaska (Weymouth, Adam. “The
Alaskan Town Where People Still Pan for Gold.”
17:
1049:
816:
788:
613:
454:
385:
Placer Mining: A Hand-book for
Klondike and Other Miners and Prospectors
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650:
618:
544:
157:, it is still a source of income for many who live in parts of Alaska.
89:
1054:
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350:
Georgetown
University Libraries Special Collections, Lemelson Center
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Because of the stratification process, gold panning is used in the
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122:
45:
37:
29:
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74:
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388:. Scranton, Pa.: Colliery Engineering Co. 1897. pp. 96–97.
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like gold, sink to the bottom of the pan. Materials with low
219:
Pans are manufactured in both metal and high-impact plastic.
84:
The first recorded instances of placer mining are from
427:. Easton, Pa.: American Institute of Mining Engineers.
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992:
965:
912:
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408:. New York: John Wiley & Sons. pp. 30–33.
185:Various designs of gold pans from around the world
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107:or large extractors, such as those used at the
173:which are the source of most placer deposits.
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397:
395:
8:
93:
1002:
909:
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514:
477:
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425:Glossary of Mining and Metallurgical Terms
291:
289:
283:, Atlantic Media Company, 29 Sept. 2014
248:
299:Placer Gold Recovery Methods (No. 87)
7:
25:
498:Non-ferrous extractive metallurgy
161:or infrastructure, as well as in
439:"How to use a Yuri-ita (ゆり板を使う)"
256:Lynn Cohen Duncan (1999-12-09),
34:Panning for gold in a creek bed
1:
851:Bottom-blown oxygen converter
113:Kalgoorlie, Western Australia
405:Hydraulic and Placer Mining
346:"Ord Family Papers, Part 2"
319:ECO-MINEX INTERNATIONAL LTD
1127:
315:"Gold Pans of Every Shape"
296:Silva, Michael A. (1986).
208:Edward Otho Cresap Ord, II
492:
577:Underground in soft rock
572:Underground in hard rock
163:recreational gold mining
42:Gold in the pan, Alaska
419:Raymond, R.W. (1881).
402:Wilson, E. B. (1907).
259:Roman Deep-vein Mining
198:
186:
132:
94:
55:
43:
35:
905:(by aqueous solution)
737:Gravity Concentration
486:Extractive metallurgy
192:
184:
126:
49:
41:
33:
27:Form of placer mining
1020:Hall–Héroult process
699:Mechanical screening
54:early 1900s with dog
50:Man gold panning in
742:Magnetic separation
689:Cyclonic separation
510:(by physical means)
495:Metallurgical assay
109:Super Pit gold mine
1106:Traditional mining
823:Refractory linings
694:Gyratory equipment
506:Mineral processing
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187:
133:
71:traditional mining
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52:Fairplay, Colorado
44:
36:
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994:Electrometallurgy
988:
987:
947:Gold chlorination
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770:
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732:Jig concentrators
530:Natural resources
525:Geological survey
511:
325:on August 1, 2010
16:(Redirected from
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1111:Gold prospecting
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998:(by electricity)
997:
980:Pan amalgamation
952:Gold cyanidation
942:In situ leaching
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540:Economic geology
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344:Various (2006).
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321:. Archived from
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138:specific gravity
127:"Panning out" ~
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1025:Castner process
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901:Hydrometallurgy
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861:IsaKidd process
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717:Froth flotation
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812:Flash smelting
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79:placer deposit
73:that extracts
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802:Lead smelting
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709:Concentration
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96:ruina montium
92:and panning (
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68:
67:placer mining
64:
60:
53:
48:
40:
32:
19:
1007:Electrolysis
967:Amalgamation
726:
722:Jameson cell
679:Hydrocyclone
442:. Retrieved
433:
424:
414:
404:
384:
356:December 30,
354:. Retrieved
349:
339:
327:. Retrieved
323:the original
318:
308:
298:
281:The Atlantic
280:
273:
263:, retrieved
258:
251:
238:
228:
226:
218:
214:
211:
200:
194:
169:parent gold
167:
159:
147:
134:
129:Stereoscopic
102:
86:ancient Rome
83:
62:
61:, or simply
59:Gold panning
58:
57:
1101:Gold mining
1043:Co-products
877:Calcination
841:Cupellation
757:Dry washing
746:Magnetation
669:Ore sorting
634:Pebble mill
601:Comminution
221:Russia iron
18:Gold-panner
1095:Categories
1080:Stamp sand
1030:Downs cell
762:Buddle pit
752:Rocker box
609:Stamp mill
550:Base metal
518:Extraction
329:August 30,
265:2009-12-14
244:References
143:black sand
105:rocker box
922:Lixiviant
887:Liquation
780:(by heat)
641:Ball mill
584:Recycling
444:29 August
313:Various.
1050:Tailings
914:Leaching
882:Roasting
833:Refining
817:ISASMELT
789:Smelting
646:Rod mill
629:SAG mill
614:Arrastra
240:motion.
235:Yuri-ita
150:assaying
1075:Red mud
1065:Clinker
819:furnace
727:Panning
684:Trommel
674:Vanning
651:IsaMill
624:AG mill
619:Crusher
567:Surface
545:Mineral
421:"batea"
204:mercury
119:Process
90:sluices
77:from a
63:panning
1055:Gangue
856:Poling
662:Sizing
562:Mining
195:bateas
870:Other
589:Scrap
229:batea
171:veins
155:hobby
111:, in
1070:Chat
1060:Slag
446:2014
358:2009
331:2010
227:The
177:Pans
75:gold
69:and
535:Ore
100:).
1097::
423:.
394:^
367:^
348:.
317:.
288:^
165:.
748:)
744:(
478:e
471:t
464:v
448:.
360:.
333:.
197:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
