Adamite


Adamite is a popular mineral composed of zinc arsenate. [1]

Images of adamite

Adamite: Quick Facts and Characteristics

Some quick facts for Adamite:
  • Transparency: Adamite can be translucent or transparent.
  • Crystallography: In terms of crystallography, adamite is orthorhombic.
  • Luster: In terms of luster, adamite can be adamantine or vitreous (glassy).
  • Streak: Adamite streaks white.
  • Hardness: Adamite's hardness is 3.5 on the Moh's scale.
  • Specific Gravity: Adamite's specific gravity ranges from 4.32 to 4.68.

Adamite: Background and Summary

Adamite is a mineral that belongs to the arsenate group and is composed of zinc and copper. It is a rare mineral that is found in oxidized zinc-copper deposits and is usually formed as a secondary mineral. Adamite is usually found in small crystals that are transparent to translucent, and can be found in colors ranging from green to yellow, and even brown or white. The mineral is quite fragile and can easily break or crumble, making it difficult to handle.

To identify adamite, look for small, elongated crystals that are usually less than an inch in length. Adamite is usually found in clusters, and its color can range from a bright yellow-green to a more muted brown or white. It has a vitreous luster and a hardness of 3.5-4 on the Mohs scale. Adamite is also fluorescent under UV light, emitting a bright green or yellow-green color.

Adamite has few practical uses due to its rarity and fragility. However, it is a popular mineral among collectors due to its unique color and crystal structure. It is also used in the production of zinc and copper, but this is a very small application.

Adamite: Table of Properties

Attribute Adamite (src)
Transparency transparent, translucent
Chemical Formula Zn2(AsO4)(OH)
Chemical Composition zinc arsenate
Specific Gravity 4.32, 4.68
Hardness 3.5
Streak white
Crystallography orthorhombic
Refractive Index 1.708, 1.773
Hydrous No
Colors common: yellow, green, blue, red
sometimes: white, colorless
less common: pale, pink, rose, orange, purple, violet, brown, multicolor
Category arsenate
Birefringence δ = 0.055
Fracture 1: 1


Adamite: FAQ

FAQs:

Q: Is adamite toxic?
A: Adamite can contain small amounts of arsenic, which can be toxic if ingested or inhaled. It is important to handle adamite with care and wear protective gear when working with it.

Q: Where is adamite found?
A: Adamite is found in oxidized zinc-copper deposits around the world, including Mexico, Chile, Germany, and the United States.

Q: Can adamite be used in jewelry?
A: Due to its fragility and rarity, adamite is not commonly used in jewelry. However, it can be used as a decorative stone in small pieces.

Sources

- Mindat.org
- Geology.com
- Minerals.net
- Adamite: https://en.wikipedia.org/wiki/Adamite

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