International Gold

Can the classification of a mineral as an ore change?

Please give a brief but sufficient explanation.

Calling particular mineral that is found in a particular geological environment as ore depends on whether it can be economically extracted.

On the basis of several factors, the economics of mineral extraction can change. A few years ago, the international gold price was US$250 / troy ounce. The current gold price is US$1130 / troy oz. Even if one considers increases in labour costs due to inflation over the past few years, certain ground that was previously considered economic (due to low grade or low tonnage), can now be profitably extracted.

A further factor which has made mining more efficient & has resulted in ground that previously been uneconomic becoming economic, is advances in extraction (metallurgical) technology. Before 1886. all gold mining used some sort of gravitation or murcurial extraction; this meant that gold mining could only continue below the water-table where material consisting of visable gold was concerned. Cyanidation, post 1886, meant that sulphides (and in particular pyrite) which contained microscopic inclusions of gold, could be economically worked for gold & could be considered gold ore.

Find Popular International Gold At eBay Below:

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1968 Mexico Lions Club International Olympic Gold Medal VERY RARE In Box w COA
1968 Mexico Lions Club International Olympic Gold Medal VERY RARE In Box w COA
$4,995.00
China 450 Yuan 1979 International Year of the Child Gold Coin With PCGS PR69
China 450 Yuan 1979 International Year of the Child Gold Coin With PCGS PR69
$2,888.88
1989 Gold Panda 1 4 Ounce Gold NY Intl Exposition Commemorative Proof Medal
1989 Gold Panda 1 4 Ounce Gold NY Intl Exposition Commemorative Proof Medal
$529.99
2012 China 1 2 oz Gold Panda Singapore Intl Coin Fair Medal NGC PF70 Ultra Cameo
2012 China 1 2 oz Gold Panda Singapore Intl Coin Fair Medal NGC PF70 Ultra Cameo
$2,050.00
1992 R Bi Metal Italy 500L Genoa Intl Expo Gold Platinum Proof Coin Columbus
1992 R Bi Metal Italy 500L Genoa Intl Expo Gold Platinum Proof Coin Columbus
$1,299.00
China 1992 Panda Munich International Coin Show 1 2 oz Gold NGC PF68 ULTRA CAM
China 1992 Panda Munich International Coin Show 1 2 oz Gold NGC PF68 ULTRA CAM
$1,146.50
China 1997 Panda Munich International Coin Show 1 2 oz Gold NGC PF69 ULTRA CAM
China 1997 Panda Munich International Coin Show 1 2 oz Gold NGC PF69 ULTRA CAM
$3,621.50
China 1991 Panda Munich International Coin Show 1 2 oz Gold NGC PF69 ULTRA CAM
China 1991 Panda Munich International Coin Show 1 2 oz Gold NGC PF69 ULTRA CAM
$1,556.50
Chinese Gold Panda Half Ounce 2012 Singapore International Coin Fair
Chinese Gold Panda Half Ounce 2012 Singapore International Coin Fair
$1,584.70
50 Rubles Russia 1 4 oz Gold 2011 Bicentenary of the Internal Troops Proof
50 Rubles Russia 1 4 oz Gold 2011 Bicentenary of the Internal Troops Proof
$2,290.00
1979 Japan UNICEF International Year Of The Child Gold plated Coin
1979 Japan UNICEF International Year Of The Child Gold plated Coin
$19.99
1980 Mongolia 750 Tugrik 1 2 oz Gold Coin International Year of Child NGC PF66
1980 Mongolia 750 Tugrik 1 2 oz Gold Coin International Year of Child NGC PF66
$820.00
China 1988 1oz Munich Intl coin show gold medal NGC PF68
China 1988 1oz Munich Intl coin show gold medal NGC PF68
$2,490.00
1987 CHINA 6TH INTL HONG KONG COIN EXPO 5 OZ SILVER MEDAL RARE GOLD GILT
1987 CHINA 6TH INTL HONG KONG COIN EXPO 5 OZ SILVER MEDAL RARE GOLD GILT
$1,916.00
1982 GOLD TUNISIA 75 DINARS INTERNATIONAL YEAR OF CHILD NGC PROOF 70 ULTRA CAMEO
1982 GOLD TUNISIA 75 DINARS INTERNATIONAL YEAR OF CHILD NGC PROOF 70 ULTRA CAMEO
$1,450.00
1979 1 2oz International Year of the Child water flower gold coin NGC PF69
1979 1 2oz International Year of the Child water flower gold coin NGC PF69
$2,290.00
FRANCE PARIS 1907 BRONZE GOLD PLATED MEDAL INTERNATIONAL UNIVERSAL EXPOSITION
FRANCE PARIS 1907 BRONZE GOLD PLATED MEDAL INTERNATIONAL UNIVERSAL EXPOSITION
$135.00
1991 China 1 2oz Gold Panda Munich international Coin Show Medal NGC PF68
1991 China 1 2oz Gold Panda Munich international Coin Show Medal NGC PF68
$1,280.00
Malaysia 2003 International Maritime  Aerospace Exhibition Nordic Gold Coin
Malaysia 2003 International Maritime Aerospace Exhibition Nordic Gold Coin
$13.00
Malaysia 2009 International Year Of Astronomy Nordic Gold Coin
Malaysia 2009 International Year Of Astronomy Nordic Gold Coin
$15.99
San Marino 2005 International Peace day 20 Euro Gold NGC PF68 ULTRA CAMEO
San Marino 2005 International Peace day 20 Euro Gold NGC PF68 ULTRA CAMEO
$480.12
San Marino 2005 International Peace day 20 Euro Gold NGC PF69 ULTRA CAMEO
San Marino 2005 International Peace day 20 Euro Gold NGC PF69 ULTRA CAMEO
$505.12
San Marino 2005 International Peace day 50 Euro Gold NGC PF69 ULTRA CAMEO
San Marino 2005 International Peace day 50 Euro Gold NGC PF69 ULTRA CAMEO
$736.07
San Marino 2005 International Day of Peace 2pc Proof Gold Set with Box
San Marino 2005 International Day of Peace 2pc Proof Gold Set with Box
$1,344.19
RUSSIAN SOVIET PAPER MONEY RUBLE MMM MAVRODI USSR COINS GOLD SILVER UCIRCULATED
RUSSIAN SOVIET PAPER MONEY RUBLE MMM MAVRODI USSR COINS GOLD SILVER UCIRCULATED
$3.99
International Monetary Mint 1964 1980 Mini Krugerrand 14 k Gold Coins
International Monetary Mint 1964 1980 Mini Krugerrand 14 k Gold Coins
$50.00
China 1988 1oz Munich Intl coin show gold medal with coa and box
China 1988 1oz Munich Intl coin show gold medal with coa and box
$2,150.00
1989 China 1 2oz Gold Panda Munich international Coin Show Medal NGC PF69
1989 China 1 2oz Gold Panda Munich international Coin Show Medal NGC PF69
$1,590.00
1991 China 1 2oz Gold Panda Munich international Coin Show Medal NGC PF69
1991 China 1 2oz Gold Panda Munich international Coin Show Medal NGC PF69
$1,580.00
1982 GOLD TUNISIA 75 DINARS INTERNATIONAL YEAR OF CHILD NGC PROOF 68 ULTRA CAMEO
1982 GOLD TUNISIA 75 DINARS INTERNATIONAL YEAR OF CHILD NGC PROOF 68 ULTRA CAMEO
$875.00
1982 GOLD TUNISIA 75 DINARS INTERNATIONAL YEAR OF CHILD NGC PROOF 69 ULTRA CAMEO
1982 GOLD TUNISIA 75 DINARS INTERNATIONAL YEAR OF CHILD NGC PROOF 69 ULTRA CAMEO
$895.00
1989 Gold Panda 1 4 Ounce Gold NY Intl Exposition Commemorative Proof Medal
1989 Gold Panda 1 4 Ounce Gold NY Intl Exposition Commemorative Proof Medal
$549.99
1996 Munich Intl Coin Show Medal Bimetallic 1 4 Gold 1 8 Silver China Panda
1996 Munich Intl Coin Show Medal Bimetallic 1 4 Gold 1 8 Silver China Panda
$6,907.62
1995 1 2 oz China Gold Panda Munich international Coin Show Medal NGC PF69
1995 1 2 oz China Gold Panda Munich international Coin Show Medal NGC PF69
$2,290.00
1992 1 2oz China munich international coin show gold medal NGC PF68 Ultra Cameo
1992 1 2oz China munich international coin show gold medal NGC PF68 Ultra Cameo
$1,350.00
1993 1 2oz munich international coin show China gold medal NGC PF69 Ultra Cameo
1993 1 2oz munich international coin show China gold medal NGC PF69 Ultra Cameo
$1,490.00
1992 1 2oz China munich international coin show gold medal NGC PF69 Ultra Cameo
1992 1 2oz China munich international coin show gold medal NGC PF69 Ultra Cameo
$1,580.00
1990 1 2oz China munich international coin show gold medal NGC PF68 Ultra Cameo
1990 1 2oz China munich international coin show gold medal NGC PF68 Ultra Cameo
$1,548.00
1988 China 1oz Munich Intl coin show gold medal NGC PF69
1988 China 1oz Munich Intl coin show gold medal NGC PF69
$2,990.00
2011 Expo XIAN International Horticultural Exposition 24K Gold Plated Coins Set
2011 Expo XIAN International Horticultural Exposition 24K Gold Plated Coins Set
$24.99



List Of Recently Purchased International Gold:


1968 mexico lions club international olympic gold medal very rare in box w coa, china 450 yuan 1979 international year of the child gold coin with pcgs pr69, 1989 gold panda 14 ounce gold ny intl exposition commemorative proof medal, 2012 china 12 oz gold panda singapore intl coin fair medal ngc pf70 ultra cameo, 1992 r bimetal italy 500l genoa intl expo gold platinum proof coin columbus , china 1992 panda munich international coin show 12 oz gold ngc pf68 ultra cam, china 1997 panda munich international coin show 12 oz gold ngc pf69 ultra cam, china 1991 panda munich international coin show 12 oz gold ngc pf69 ultra cam, chinese gold panda half ounce 2012 singapore international coin fair, 50 rubles russia 14 oz gold 2011 bicentenary of the internal troops proof, 1979 japan unicef international year of the child gold plated coin, 1980 mongolia 750 tugrik 12 oz gold coin international year of child ngc pf66, china 1988 1oz munich intl coin show gold medal ngc pf68, 1987 china 6th intl hong kong coin expo 5 oz silver medal rare gold gilt, 1982 gold tunisia 75 dinars international year of child ngc proof 70 ultra cameo, 1979 12oz international year of the child water flower gold coin ngc pf69, france paris 1907 bronze goldplated medal international universal exposition, 1991 china 12oz gold panda munich international coin show medal ngc pf68, malaysia 2003 international maritime amp; aerospace exhibition nordic gold coin, malaysia 2009 international year of astronomy nordic gold coin, san marino 2005 international peace day 20 euro gold ngc pf68 ultra cameo, san marino 2005 international peace day 20 euro gold ngc pf69 ultra cameo, san marino 2005 international peace day 50 euro gold ngc pf69 ultra cameo, san marino 2005 international day of peace 2pc proof gold set with box , russian soviet paper money ruble mmm mavrodi ussr coins gold silver ucirculated, international monetary mint 19641980 mini krugerrand 14 k gold coins, china 1988 1oz munich intl coin show gold medal with coa and box, 1989 china 12oz gold panda munich international coin show medal ngc pf69, 1991 china 12oz gold panda munich international coin show medal ngc pf69, 1982 gold tunisia 75 dinars international year of child ngc proof 68 ultra cameo, 1982 gold tunisia 75 dinars international year of child ngc proof 69 ultra cameo, 1996 munich intl coin show medal bimetallic 14 gold 18 silver china panda, 1995 12 oz china gold panda munich international coin show medal ngc pf69, 1992 12oz china munich international coin show gold medal ngc pf68 ultra cameo, 1993 1 2oz munich international coin show china gold medal ngc pf69 ultra cameo, 1992 12oz china munich international coin show gold medal ngc pf69 ultra cameo, 1990 12oz china munich international coin show gold medal ngc pf68 ultra cameo, 1988 china 1oz munich intl coin show gold medal ngc pf69, 2011 expo xian international horticultural exposition 24k gold plated coins set, haiti 200 gourdes1975 gold pcgs pr69dcam international womens year mtg840 only, iraq 10000 dinars 1979 gold pcgs pr61dcam international year of the child , 2012 china 12 oz gold panda singapore intl coin fair medal ngc pf69 ultra cameo, 2011 russia gold 50 roubles bicentenary of internal troops ngc pf69 mintage750, australia 2005 rotary club international 1 dollar $ silver poof oz 100 years, china 1979 12oz gold international year of the child ngc pf69 , china 2012 singapore international coin fair panda 5 oz gold ngc pf69 with coa, china 2012 singapore international coin fair panda 5 oz gold ngc pf70 with coa, australia victoria 1888 av medal ngc pr63 cameo melbourne intl exhibition



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