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Gold Data Facts Sheet
Gold Data Facts Sheet Gold is measured using the troy system (French):
1 grain = 1 french wheat seed (grain)
1 pennyweight = 24 grains (1 old time French penny)
1 troy ounce = 20 pennyweight Weight Equivalents:
1 troy ounce = 20 pennyweight
1 troy ounce = 1.097 ordinary ounces
1 troy ounce = 480 grains
1 troy ounce = 31.1 grams
1000 troy ounces = 31.1 kilograms
1 gram = .03215 troy ounces
1 kilogram = 32.15 troy ounces
1 tonne = 32,151 troy ounces
1 avoirdupois (ordinary) ounce = .911 troy ounces
1 avoirdupois (ordinary) pound = 14.58 troy ounces Water Equivalents:
4 quarts = 1 gallon = 231 cubic inches
31-1/2 gallons = 1 barrel
weight of 1 gallon of water = 8.34 pounds
weight of 1 cubic foot of water = 62.4.pounds
1 cubic foot of water contains 7.5 gallons, approximately
1 miner's inch = 1-1/2 cubic feet per minute Tyler Standard Screen Scale:
Mesh Opening mm Nearest fraction
3.............6.68.............1/4
4.............4.70.............3/16
6.............3.32.............1/8
8.............2.36.............3/32
10............1.65.............1/16
14............1.16.............3/64
20............0.83.............1/32
35............0.41.............1/64
Specific Gravity (water = 1.0):
Gold..............................15.6-19.4
Platinum........................14-19.0
Silver.............................10-11.0
Galena............................7.4
Pyrite..............................5.0
Magnetite (black sand)..5.1
Rutile (black sand).........4.1
Ilmenite (black sand)......4.5
Mica 2.7
Quartz 2.6 ORES: associated with gold and silver:
.................................S.G.
(Gold) Iron pyrites...........4.8.5.2
Copper pyrites.................4. 0.4. 3
(Silver) Galena.................7.2.7.7
Glance (silver)..................7.2.7.4
Ruby silver (dark).............5.74 9
Ruby silver (light).............5.54.6
Brittle silver (sulphide).....5.24.3
Horn silver........................5.5.5.6 |
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