Specimen Gold 2583Ntl

Specimen Gold 2583Ntl
Specimen Gold 2583Ntl2583B_Ntl2583C_Ntl
$175.00 In stock Weight: 25.9 Grams
Length: 4.6 cm
Width: 3 cm
Height: 1.5 cm



Specifications

National
Humboldt

Electrum from the National mining district. This piece contains 2.87 Grams electrum by weight..as determined by a specific gravity determination. However, it is 50% Gold and 50% Silver by volume..not weight... as Gold is twice as heavy as Silver.  Gold is a bright, lustrous, pale-yellow color with a trace of a bronzy color and occurs as ribbons, grains, and leaves in a quartz matrix as a lens. This was probably mined around 1900s. From an old collection.  Specimen has been treated with Mineral Oil to enhance the Gold..if desired it can be removed by soaking in hot water or alcohol.  Housed in a 2 1/4 X 2 1/4 X 2 1/4 inch perky box.