Gold

  
Gold on quartz
  
 
     
 
  
 
        
 
  
 
  
Origin: Bendigo Gold Fields, Victoria, Australia
Sample size: 5.2 x 3.6 x 1.6 cm (top), 2.8 x 2.5 x 0.6 cm (2nd row), 6.7 x 3.3 x 1 cm (3rd row), 7.5 x 1.6 x 0.9 cm (4th row), 7.5 x 6.1 x 1.8 cm (5th row), 9 x 5.5 x 1 cm (6th row), 10 x 4.6 x 2.2 cm (bottom)
 
  
Origin: Mt. Kare, near Porgera, Enga Province, Papua New Guinea
Sample size: 2.7 x 0.4 x 0.4 cm
 
     
Origin: Yuba River Area, Yuba Gold Field, Yuba County, Northern California, U.S.A.
Sample size: 5.6 x 3.6 x 3.2 cm
 
Origin: Kuskokwim River, Alaska
Sample size: 6.2 x 1.6 x 0.4 cm
 
     
Origin: Colorado Gold Quartz Mine, Mariposa Co., California, U.S.A.
Sample size: 5.5 x 3.2 x 2.5 cm
 
     
Origin: Eagle's Nest Mine, Placer Co., California, U.S.A.
Ex. Marty Lewadny collection
Sample size: 3.9 x 2.2 x 0.4 cm
 
  
Origin: Kilometer 88 District, West of Santa Elena, Venezuela
Ex. F J Barlow collection
Sample size: 3.2 x 1.1 x 0.6 cm
 
     
Origin: Chuquaiaguillo River, La Paz Dept., Bolivia
Sample size: 4 x 3 x 0.7 cm
 
        
Gold on quartz
Origin: Zacatecas, Mexico
Ex. John Whitmire to Gary Hansen Collection
Sample size: 4 x 3 x 1.5 cm
 
     
Gold on quartz
Origin: Eagle's Nest Mine, Placer Co., California, U.S.A.
Sample size: 15 x 7 x 1.75 cm
 
     
"The Providence Nugget" was found by Jack Lange. Jack Lange is a well known Australian prospector who writes for and advertises in Australian Gold Gem and Treasure magazine. He spends his time between running his detector store jacksgold.com and nugget hunting himself in the wilds of Northern Australia. Note that this is a much rarer area to get a good, and large nugget from than from the comparatively richer goldfields in Southern Australia.
From Jack: "I called this magnificent 1100 gram (35.3 ounce) crystalline nugget the “Providence Nugget’ because of the circumstances surrounding its discovery. My brother Ed and I decided to try an area we hadn’t prospected before in North QLD…I detected the nugget within minutes of getting out of my vehicle at only about 45 cm depth!! Another week of searching the surrounding area produced nothing…so this was truly a providential find, thus the “Providence Nugget”. The whole story (along with the locality once he is done finishing exploration there) will be in an early 2005 edition of Australian Gold Gem and Treasure magazine.
Origin: Queensland, Australia (exact locality to be published in Australian Gold, Gem, and Treasure)
Sample size: 13.5 x 11.3 x 1.5 cm (average height)
weight = 1100 grams / 35.5 ounces
 
  
Origin: Eldorado Mine, Gympie, Queensland, Australia
Ex. Marty Lewadny Collection
Sample size: 2.8 x 1.6 x 0.9 cm, 2.4 x 1.3 x 1.2 cm
 
           
Gold with conichalcite
Origin: Dome Rock Copper Mine, Olary Province, South Australia, Australia
Sample size: 7.8 x 6.0 x 5.5 cm
 
     
Origin: Stope 1462, Parmour Hill, Timmons, Ontario, Canada
Ex. M. Dodge collection
Sample size: 2.4 x 1 x 0.3 cm
 
  
Origin: Victoria Goldfields, near Bendigo, Australia
Sample size: 3.6 x 2.2 x 1.7 cm
 
  
Origin: Wirepatch Mine, Breckenridge, Colorado, U.S.A.
Ex. Marty Zinn collection
Sample size: 5.4 x 2.8 x 0.3 cm
 
  
Origin: Dixie Mine, Clear Creek Co., Colorado, U.S.A.
Ex. Marty Zinn collection
Sample size: 5 x 4 x 4 cm
 
  
Origin: Colorado Quartz Mine, Mariposa County, California, U.S.A.
Sample size: 5 x 3.4 x 0.8 cm
 
     
Origin: Newfoundland, Canada
Sample size: 1.2 cm - longest
 
  
Origin: Kittitas County, Washington, U.S.A.
Ex. Richard Hauck collection
Sample size: 1.4 x 1.2 x 0.7 cm
 
  
Origin: Round Mountain Mine, Nye County, Nevada, U.S.A.
Sample size: 5 x 1.2 x 0.2 cm
 
        
Origin: Breckenridge area, Colorado, U.S.A.
Ex. Richard Hauck collection
Sample size: 1.3 cm - longest
 
     
Origin: Mariposa County, California, U.S.A.
Ex. Marilyn Dodge collection
Sample size: 1.9 x 1.7 x 0.5 cm
 
           
Origin: Eagle"s Nest Mine, Placer Co., California, U.S.A.
Sample size: 3.7 x 1.9 x 0.4 cm
 
  
Origin: Nightingale District, Pershing Co., Nevada, U.S.A.
Sample size: 2.0 x 0.7 x 0.4 cm
 
        
Gold on arsenopyrite and quartz
Origin: Triumph Mine, Whitlock Mining District, Mariposa County, California, U.S.A.
Ex. Marilyn Dodge collection
Sample size: 2.2 x 0.9 x 0.9 cm
 
Origin: Farncomb Hill, Breckenridge, Summit County, Colorado, U.S.A.
Sample size: 2.1 x 1.7 x 0.4 cm
 
Origin: Leadville area, Colorado, U.S.A.
Sample size: 2 x 1.5 x 0.5 cm
 
Origin: Alaska, U.S.A.
Sample size: 4.5 x 3 x 0.6 cm
 
  
Origin: Colorado Quartz Mine, Mariposa County, California, U.S.A.
Sample size: 1.1 x 1.1 x 0.7 cm
 
  
 
Origin: Eagle’s Nest Mine, Placer County, California, U.S.A.
Sample size: 2.3 x 1.7 x 1.5 cm (top), 3.1 x 2.5 x 0.7 cm (bottom)
 
Origin: Kilometer 88 District, West of Santa Elena, Venezuela
Sample size: 2.5 x 0.5 x 0.2 cm
 
Origin: Northern California, U.S.A.
Sample size: 2.0 x 1.8 x 0.4 cm
 
 
 
 
Origin: Mina Zapata, Santa Elena de Uairen, Venezuela
Ex. Smale collection
Sample size: 1.5 x 1 x 0.5 cm (top), 1.3 x 1 x 0.1 cm (2nd row), 1.3 x 1 x 0.5 cm (3rd row), 1.4 x 0.9 x 0.2 cm (bottom)
 
  
Origin: Colorado Quartz Mine, Mariposa County, California, U.S.A.
Sample size: 1 x 0.9 x 0.7 cm
 
     
Gold in goethite
Origin: Bouse, La Paz County, Arizona, U.S.A.
Sample size: 5.9 x 3.9 x 2.5 cm
 
        
Gold on quartz
Origin: Red Lake Mine, Balmerton, Ontario, Canada
Sample size: 5.0 x 4.2 x 3.5 cm
 
  
Origin: Mother Lode, Mariposa Co., California, U.S.A.
Ex. Marilyn Dodge collection
Sample size: 1.5 x 0.7 x 0.1 cm
 
        
Gold on quartz and albite
Origin: Eldorado Mine, Gympie Region, Queensland, Australia
Sample size: 2.3 x 1.8 x 1.5 cm
 
     
 
  
 
     
Origin: Round Mountain Mine, Nye Co., Nevada, U.S.A.
Sample size: 3 x 2.5 x 1.3 cm (top), 2.2 x 0.9 x 0.8 cm (2nd row), 3.5 x 2.3 x 2.2 cm (bottom)
 
  
Origin: Liberty District, Kittitas Co., Washington, U.S.A.
Sample size: 3.4 x 1.9 x 0.9 cm
 
     
Origin: Mt. Kare, New Guinea
Sample size: 4.7 x 2.8 x 1.6 cm
 
           
Gold on quartz
Origin: Hope's Nose, Torquay, Devon, England
Sample size: 4.4 x 2.8 x 1.1 cm
 
     
Gold with calcite and arsenic
Origin: Roata Mine, Cavnic, Maramures Co., Romania
Sample size: 1.9 x 1.1 x 1.1 cm
 
        
 
     
 
  
 
  
 
  
 
        
 
        
 
        
 
     
 
     
 
     
 
     
 
 
        
Origin: Majuba Placers, Antelope District, Pershing Co., Nevada, U.S.A.
Sample size: 1.3 x 0.8 x 0.7 cm (top), 1.8 x 0.7 x 0.6 cm (2nd row), 2.3 x 1.6 x 0.6 cm (3rd row), 1.6 x 1.2 x 0.4 cm (4th row), 1.3 x 1.2 x 0.6 cm (5th row), 1.1 x 0.8 x 0.4 cm (6th row), 2.1 x 1.6 x 1.3 cm (7th row), 1.3 x 0.6 x 0.3 cm (8th row), 1.5 x 0.6 x 0.5 cm (9th row), 1.8 x 0.9 x 0.6 cm (10th row), 1.2 x 0.8 x 0.6 cm (11th row), 2.7 x 1.4 x 0.6 cm (12th row), 1.3 x 0.8 x 0.6 cm (13th row), 1.3 x 0.7 x 0.4 cm (bottom)
 
Gold with minor arsenopyrite
Origin: Diltz Mine, Mariposa Co, California, U.S.A.
Sample size: 1.6 x 1.2 x 1.0 cm
 
        
Gold on milky quartz
Origin: Nova Scotia, Canada
Sample size: 3.5 x 2.1 x 1.8 cm
 
     
Gold in granite
Origin: St. Johns, Newfoundland, Canada
Sample size: 2.2 x 1.9 x 1.6 cm
 
     
Origin: Grube Musariu, near Brad, Siebenburgen, Transylvania, Romania
Ex. Mark Mauthner collection
Sample size: 3.0 x 2.4 x 2.0 cm
 
  
Origin: Oro Flame Mine, Sierra County, California, U.S.A.
Ex. Mark Mauthner collection
Sample size: 4.2 x 2.9 x 1.8 cm
 
     
Gold with sphalerite
Origin: Musariu Mine, Brad, Transylvania, Romania
Ex. Carnegie Museum, Mark Mauthner collection
Sample size: 4.0 x 3.1 x 0.4 cm
 
     
Gold in quartz
Origin: Murchison, Western Australia, Australia
Ex. Mark Mauthner collection
Sample size: 4 x 2.2 x 1.8 cm
 
        
Gold on calcite
Origin: Bronzewing Mine, Mt. McClure, Western Australia, Australia
Ex. Mark Mauthner collection
Sample size: 4.1 x 2.4 x 1.8 cm
 
Origin: Motherlode Meridian Mine, Placer County, California, U.S.A.
Ex. Mark Mauthner collection
Sample size: 2.9 x 1.2 x 1.2 cm
 
  
Origin: Eagles Nest Mine, Placer County, California, U.S.A.
Ex. Mark Mauthner collection
Sample size: 3.5 x 2.6 x 0.9 cm
 
     
Origin: Mockingbird Mine, Mariposa County, California, U.S.A.
Ex. Mark Mauthner collection
Sample size: 2.9 x 1.4 x 0.6 cm
 
  
Origin: Eldorado County, California, U.S.A.
Ex. Mark Mauthner collection
Sample size: 5.7 cm tall
 
     
Origin: Serra Pelada, Para State, Brazil
Ex. Mark Mauthner collection
Sample size: 4.3 x 2.3 x 1.2 cm
 
     
Gold on quartz
Origin: Rosia Montana, Verespatak, Transylvania, Romania
Ex. Austrian Museum of Vienna, Al Partee, Steve Neely, Irv Brown and Mark Mauthner collections
Sample size: 4.3 x 2.7 x 1.3 cm
 
    
Gold on quartz
Origin: Red Ledge Mine, Washington, Nevada County, California, U.S.A.
Ex. Mark Mauthner collection
Sample size: 4.9 x 2.8 x 1.4 cm
 
     
Wire gold on quartz matrix
Origin: Ruda Deposit, Barza, Transylvania, Romania
Ex. Mark Mauthner collection
Sample size: 4 x 2.7 x 2.5 cm
 
     
Origin: Papua, New Guinea
Ex. Bill Forrest and Mark Mauthner collections
Sample size: 2.0 x 1.0 x 0.5 cm
 
     
Origin: Verespatak, Transylvania, Romania
Ex. Mark Mauthner collection
Sample size: 8 x 6 x 4 cm
 
     
Gold in quartz
Origin: St. Johns, Newfoundland, Canada
Sample size: 2.7 x 1.3 x 1.0 cm
 
     
Origin: Queen Mine, Sierra County, California, U.S.A.
Sample size: 1.9 x 1.5 x 1.3 cm
 
     
Gold on quartz
Origin: Brooklyn Mine, Silverton, San Juan Co., Colorado, U.S.A.
Sample size: 1.7 x 1.4 x 1.3 cm
 
        
 
  
Gold (spinel twin) on matrix
     
 
        
Origin: Mockingbird Mine, Mariposa County, California, U.S.A.
Sample size: 10 x 8 x .7 cm (top), 4.0 x 3.7 x 3.3 cm (2nd row), 6.8 x 4.8 x 1.8 cm (3rd row), 4.6 x 3.9 x 1.2 cm (bottom)
 
  
Origin: Alta Floresta, Mato Grasso, Brazil
Ex. Ed David collection
Sample size: 2.6 x 2.2 x 1.4 cm
 
        
Origin: Nova Scotia, Canada
Ex. Stimson collection
Sample size: 9.0 x 5.6 x 2.0 cm
 
        
Cubic inch of visible gold in quartz-pebble conglomerate ore from the famous Great Gold Reef of South Africa. This sawed specimen was mined from 13,000 feet below ground level in the Rhodes Mine! Visible gold is very uncommon from these deep mines.
Origin: Rhodes Mine, Great Gold Reef, South Africa
Ex. Charlie Freed collection
Sample size: 2.6 x 2.6 x 2.6 cm
 
     
Gold on quartz
Origin: Bendigo, Victoria, Australia
Sample size: 2.6 x 2.4 x 1.2 cm
 
     
The sawed milky quartz matrix shows stringers and blebs of gold and silver.
Origin: Ohio Creek District, Gunnison County, Colorado
Ex. Richard Hauck collection
Sample size: 5.4 x 4.5 x 4.0 cm
 
     
Origin: Mother Lode, Placer County, California, U.S.A.
Ex. Irv Brown collection
Sample size: 1.2 x 1.1 x 0.6 cm (largest)
 
     
Gold on quartz
Origin: Georgetown District, El Dorado Co., California, U.S.A.
Ex. Mark Mauther and Seattle University collections
Sample size: 1.0 x 1.0 x 0.9 cm
 
        
Origin: Victoria Gold Fields, New South Wales, Australia
Sample size: 4.8 x 3.3 x 2 cm
 
           
Gold on quartz
Origin: Queen Mine, Sierra County, California, U.S.A.
Sample size: 6.0 x 3.9 x 1.6 cm
 
  
Origin: Nullagine, Western Australia, Australia
Sample size: 1.5 x 1.2 x 0.3 cm
 
        
Gold in granite
Origin: St. Johns, Newfoundland, Canada
Sample size: 4.7 x 4.5 x 2.2 cm
 
           
Gold in milky quartz
Origin: Johannesburg, Witwatersrand, Transvaal, South Africa
Ex. Charlie Freed collection
Sample size: 4.1 x 2.2 x 1.5 cm
 
        
Origin: Rosia Montana, Alba County, Romania
Ex. Irv Brown collection
Sample size: 1.5 x 1.0 x 0.1 cm
 
        
Gold on malachite
Origin: Beresovskiy, Urals Region, Russia
Sample size: 3.9 x 3.2 x 2.8 cm
 
     
Origin: Majuba Placers, Nevada
Sample size: 1.1 x 0.9 x 0.5 cm, 1.0 x 1.0 x 0.7 cm, 1.2 x 1.2 x 1.2 cm (left to right)
 
  
Origin: Bendigo Goldfields, Victoria, Australia
Sample size: 10.6 x 5.5 x 1.9 cm
 
        
Gold pseudomorph after calaverite in a polished slab of matrix
Origin: Kalgoorlie, Western Australia, Australia
Ex. Charlie Freed collection
Sample size: 5.0 x 2.7 x 0.8 cm
 
        
 
        
Origin: Farncomb Hill, Breckenridge, Summit Co., Colorado, U.S.A.
Sample size: 1.9 x 1.3 x 0.5 cm (top), 1.3 x 0.9 x 0.3 cm (bottom)
 
              
Gold on quartz
Origin: Rudabanya, Borsod-Abauj-Zemplen Co., Hungary
Sample size: 5.1 x 3.3 x 2.2 cm
 
 
  
Palladium-rich gold
Origin: Near Icabaru, Gran Sabana, Venezuela
Sample size: 1.4 x 0.6 x 0.7 cm (top), 1.1 x 0.8 x 0.15 cm (bottom)
 
           
Origin: Eagles Nest Mine, Placer Co., California, U.S.A.
Sample size: 2.2 x 1.0 x 0.3 cm (largest)
 
     
Gold on granite matrix
Origin: St. Johns, Newfoundland, Canada
Sample size: 3.1 x 2.5 x 2.3 cm
 
        
Gold in quartz
Origin: Dafulou, Nandan, Guangxi Province, China
Sample size: 3.2 x 2.5 x 2.1 cm
 
     
Gold on quartz
Origin: Beresovskiy, Urals Region, Russia
Ex. George Elling collection
Sample size: 5.5 x 4.3 x 2.0 cm
 
  
Ex. F John Barlow collection
Origin: Lake Yindarlgooda, Western Australia, Australia
Sample size: 3.9 x 2.5 x 1.7 cm (top), 4.9 x 4.2 x 1.5 cm (bottom)
 
     
Origin: Ibex Mine, Leadville, Lake County, Colorado
Ex. David & Emily Stoudt collection
Sample size: 3.3 x 3.2 x 1.7 cm
 
  
Origin: near Bendigo, Victoria, Australia
Sample size: 6.1 x 2.2 x 1.6 cm
 
     
Gold on granitic matrix
Origin: St. Johns, Newfoundland, Canada
Sample size: 2.9 x 2.1 x 1.5 cm
 
  
Palladium-rich gold
Origin: Near Icabaru, Gran Sabana, Venezuela
Sample size: 1.7 x 0.6 x 0.3 cm

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Smears of gold on sericite-schist
Origin: Boliden Mine, 130 meter Level, Northern Sweden
Sample size: ca. 6 x 6 cm
 
Variety porpezite, named by Frobel (Dana6, p 53, (1892)) after a brazilian locality now lost. Dana 7, p 91,(1944) references "Taguaril and other localities in Minas Gerais and Goyaz, Brazil"
Origin: Itabira, Minas Gerais, Brasil
Sample size: micromount
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

  
Fine disseminated gold flakes to 1 mm in siliceous goethite matrix with chrysocolla. Also has associated a whitish, fibrous unknown.
Origin: Gold Hill mine, Tooele Co., Utah, United States
Ex. DeVito collection
Sample size: 5 x 5 x 4 cm
 
  
Two crystals of leaf gold to 2 mm on chloritic schist from the largest and oldest Gold mine in the United States (now shut down).
Origin: Homestake Gold mine, Lawrence Co., South Dakota, United States
Ex. Grenier collection
Sample size: 5 x 5 x 2 cm
 
  
Origin: DeMario mine, Foresthill, California, United States
Sample size: About 40 micro crystals to 1-3 mm
 
     
Origin: Wire Patch mine, Farncomb Hill, Breckenridge district, Summit Co., Colorado, United States
Sample size: leaf and wire gold micros each to about 5 mm
 
           
Origin: Mad Mutha Mine, Humboldt Co., Nevada, United States
Sample size: each 1 to 2 mm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

  
Origin: Round Mountain mine, Nye County, Nevada, US.A.
 Ex. Scott Werschky collection
Sample size: 2 x 1.1 x 0.4 cm
 
  
This coral-like formation of sharp, elongate crystals is most unusual due to the presence of palladium mixed in with the gold. To my knowledge, there are only 4 localities in the world with such chemistry. They are the famous Hopes Nose mine in the UK, the Serra Pelada and Imbria locals in Brazil, and the Gran Sabana of Venezuela. The mix of gold and palladium is sometimes refered to as Porpezite.
Origin: Near Icabaru, Gran Sabana, Venezuela
Ex. Scott Werschky collection
Sample size: 1.8 x 0.7x 0.25 cm
 
  
Origin: El Pauji, Gran Sabana, Venezuela
Ex. Scott Werschky collection
Sample size: 1.1 x 0.7 x 0.4 cm
 
     
 
     
 
     
 
     
 
     
 
     
 
     
 
     
 
     
 
     
 
     
Origin: Round Mountain Mine, Nye County, Nevada, Southwest U.S.A.
Sample size: 3.7 x 1.7 x 0.2 cm (top), 3.4 x 3.3 x 0.4 cm (2nd row), 4 x 1.7 x 0.4 cm (3rd row), 4.1 x 2 x 0.6 cm (4th row), 2.1 x 1.9 x 0.4 cm (5th row), 3.9 x 2.1 x 0.2 cm (6th row), 4.7 x 2.6 x 0.4 cm (7th row), 3.1 x 2.5 x 2.3 cm (8th row), 3.6 x 2.2 x 0.7 cm (9th row), 3.6 x 2.2 x 0.7 cm (10th row), 3 x 2.8 x 1.5 cm (bottom)
 
     
 
     
 
     
 
     
 
     
 
     
 
     
 
     
 
     
 
     
Gold on quartz
Origin: Eagle's Nest Mine, Placer County, California, U.S.A.
Sample size: 2.7 x 2.6 x 0.4 cm (top), 5 x 3 x 1 cm (2nd row), 4 x 4 x 0.8 cm (3rd row), 2.9 x 1.8 x 1 cm (4th row), 3.6 x 2.3 x 0.9 cm (5th row), 6 x 3.5 x 1 cm (6th row), 9 x 5.5 c 1.5 cm (7th row), 2.7 x 2 x 1 cm (8th row), 3.7 x 1.7 x 1.5 cm (9th row), 1.7 x 1.6 x 0.9 cm (bottom)
 
     
Gold wires on quartz
Origin: Olinghouse Mine, Washoe Co., Nevada, Southwest U.S.A.
Sample size: 7.5 x 6 x 3.6 cm
 
     
Origin: Colorado Quartz Mine(?), Mariposa County, California, U.S.A.
Sample size: 7.5 x 4 x 3 cm
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

     
Gold with quartz
Origin: Kirkland Lake, Ontario, Canada
Ex. Don Belsher collection
Sample size: 5.5 x 2.4 x 0.7 cm
 
Origin: Mt. McClure Mine, Leinster, Western Australia, Australia
Sample size: 17 x 27 mm
 
        
Gold on quartz
Origin: De Maria Mine, Placer Co., California, U.S.A.
Ex. John Barlow colection
Sample size: 5.3 x 4.2 x 4.8 cm
 
        
Gold on quartz
Origin: Mariposa Co., California, U.S.A.
Sample size: 9 x 7.5 x 6.5 cm
 
        
Origin: Santa Elena, La Gran Sebana, Venezuela
Ex. John Barlow collection
Sample size: 14 x 10 x 28 mm
 
        
Origin: Winnemucca, Humboldt Co., Nevada, U.S.A.
Ex. John Barlow collection
Sample size: 12.3 x 8.8 x 1.7 cm
 
  
Gold with ferberite
Origin: Julcani District, Huancavelica Dept., Peru
Sample size: 7 x 6.8 x 4.8 cm
 
  
Gold with minor pyrite, tetrahedrite and tennantite
Origin: Cash Mine, Gold Hill, Gold Hill District, Boulder Co., Colorado, U.S.A.
Sample size: 5 x 7 mm area of gold
 
        
 
        
 
        
Origin: Redledge Mine, Washington District, Nevada Co., California, U.S.A.
Sample size: 15 x 4 x 30 mm (top), 2.5 x 0.6 x 4.2 cm (2nd row), 23 x 2 x 43 mm (bottom)
 
  
Origin: Grass Valley, Nevada Co., California, U.S.A.
Sample size: 13 x 1 x 35 mm
 
  
 
  
Origin: Rosia Montanã (Verespatak), Alba Co., Romania
Sample size: 9.3 x 5.8 x 5.6 cm (top), 4.8 x 2.5 x 5.8 cm (bottom)
 
  
Origin: Sunnyside Mine (American Tunnel; Mogul Mine; Washington Mine; Belle Creole; Gold Prince; Brenneman Mine; Sunnyside Mine Group), Howardsville, Silverton District, San Juan Co., Colorado, U.S.A.
Sample size: 4.8 x 4 x 1.7 cm
 
  
Gold with small gray masses of tsumoite on white quartz
Origin: Björkdal mine, Kåge, Skellefteå, Västerbotten, Sweden
Sample size: 3.8 x 2 x 1.3 cm
 
     
Origin: Homestake Mine, Lead District, Lawrence Co., South Dakota, U.S.A.
Sample size: 6 x 4.8 x 5.3 cm
 
  
Gold with pyrite, tennantite and tetrahedrite
Origin: Cash Mine, Gold Hill, Gold Hill District, Boulder Co., Colorado, U.S.A.
Sample size: 21 x 10 x 29 mm
 
  
Gold in quartz
Origin: Adriatic Mine, Comstock District, Storey Co., Nevada, U.S.A.
Sample size: 5.6 x 6.7 x 4.1 cm
 
  
Origin: Windy Point Mine, Humboldt Co., Nevada, U.S.A.
Sample size: 12 x 15 x 7 mm
 
  
The specimen consists of a matrix with the front side coated by lead gray crystals of galena to 4 mm in size. Scattered about these galena crystals are tiny microscopic crystals of native gold. The galena crystals are partly coated by micro crystalline colourless dolomite(?).
Origin:  Prize Mine, Central City District, Gilpin Co., Colorado, U.S.A.
Sample size: 24 x 19 x 12 mm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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Back to Alphabetical list Physical, chemical and crystallographic description Optical properties/Thin sections SEM images TEM images vibrational spectra description IR spectra Raman spectra N-IR spectra F-IR spectra IES spectra