Adamsite

A variety of Muscovite

What is Adamsite?

Adamsite or DM is an organic compound; technically, an arsenical diphenylaminechlorarsine, that can be used as a riot control agent. DM belongs to the group of chemical warfare agents known as vomiting agents or sneeze gases. First synthesized in Germany by Heinrich Otto Wieland in 1915, it was independently developed by the US chemist Roger Adams (for whom it is named) at the University of Illinois in 1918.

Healing Properties

Adamsite is believed to help reveal a person's true self, allowing them to open their heart to a deeper love and understanding of others. Often used on the Third Eye and Crown chakra, it is said to help a person with everyday decision making and living a purposeful life. The vibrations from the stone are believed to open channels between a person and their spirit guide.

Optical Properties

Refractive Index
1.552-1.618
Pleochroism
Weak
Optical Character
Biaxial negative

Adamsite Market Value Calculator

Estimate the market value of Adamsite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Adamsite Localities Map

See where Adamsite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Key Characteristics

Composition of Adamsite

DM is an odourless crystalline compound with a very low vapour pressure. The colour of the crystals ranges from bright yellow to dark green depending on the purity. It is readily soluble in some organic solvents (e.g., acetone, dichloromethane), but nearly insoluble in water. In vaporous form it appears as a canary yellow smoke.

Quick Facts

Physical Properties

Streak
White

Chemical Properties

Chemical Formula
KAl2(AlSi3O10)(OH)2
Elements
Al, H, K, O, Si
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