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Compact Lead Mass

The Mineral lead




Lead is a common element, but is very rare in a native state. Some locations contain lead as a by-product of smelting operations, where masses of lead are formed, but they are not naturally occurring. Such specimens are occasionally sold to collectors.
Chemical Formula Pb
Composition Lead
Color Light-gray to slightly bluish-gray
Streak Light-gray. Streak shiny.
Hardness 1.5
Crystal System Isometric
Crystal Forms
and Aggregates
Occurs as small grains, and sometimes as thin flakes, bust most often in massive form.
Transparency Opaque
Specific Gravity 11.3
Luster Metallic
Cleavage None
Fracture Hackly
Tenacity Malleable, ductile, and sectile
Other ID Marks Oxidizes to a slightly bluish-gray color.
Complex Tests Dissolves in nitric acid
In Group Native Elements; Metallic Elements
Striking Features Light-gray color, heaviness, and softness (can be scratched with a fingernail)
Environment Hydrothermal deposits, placer deposits, and metamorphic marble deposits.
Rock Type Metamorphic
Popularity (1-4) 3
Prevalence (1-3) 3
Demand (1-3) 1

Lead ON EBAY
OTHER NAMES
Native Lead


USES
Due to its rarity, Native Lead is only used as a specimen for collectors. It is fairly uncommon to obtain as a specimen, and is sought after by collectors despite its lack of aesthetics.

Although Native Lead is not an ore of the element lead, the uses for that element will be briefly mentioned here: Lead is used in batteries, paint pigments, glasswork, and in sheathing electric cables. Its heavy mass enables it to be used as a shield for radioactive materials, including x-ray shielding. In recent times, much lead is being replaced with other metals, particularly in piping, paints, and glasswork, due to its health hazards in causing lead poisoning and brain damage.

NOTEWORTHY LOCALITIES
Native Lead is a very rare mineral, with few noteworthy localities. Perhaps the best collectors specimens come from Langban, Sweden. The Harstigen Mine in Varmland, Sweden has also produced a limited amount of Lead, and it has also recently been found in the Garpenberg Noora Mine, also in Varmland, as thin sheets. In the U.S., Lead has been found in Franklin and Ogdensburg, Sussex Co., New Jersey.

COMMON MINERAL ASSOCIATIONS
Calcite, Hematite, Tremolite

DISTINGUISHING SIMILAR MINERALS
The distinctive properties of Lead can distinguish it from every mineral.


lead PHOTOS
 
ADDITIONAL RESOURCES
 
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