Alchemical Symbols

This page lists all the various symbols in the Alchemical Symbols category.

Alchemical symbols, originally devised as part of alchemy, were used to denote some elements and some compounds until the 18th century. Note that while notation like this was mostly standardized, style and symbol varied between alchemists, so this page lists the most common.

Symbols in this category:

Bismuth

Alchemical symbol for bismuth.

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Black sulphur or brimstone

A symbol that represents black sulphur (aka black mercuric sulphide), as well as brimstone, in alchemy.

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Black sulphur or brimstone (alternate)

A symbol that represents black sulphur (aka black mercuric sulphide), as well as brimstone, in alchemy.

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Blue vitriol

The symbol used in alchemy and early chemistry to represent blue vitriol.

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Borax (alchemy)

A symbol used in alchemy and early chemistry to represent borax.

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Borax (alternate #1)

A symbol used in 18th century chemistry to represent borax (also known as tinkal).

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Bottle

An alchemical symbol indicating a flask or a bottle.

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Brass (alchemy)

A sign used in alchemy to represent the metal brass.

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Calcinated copper (alchemy)

A sign used in 17th century alchemy to designate calcinated copper.

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Calcinated copper (alternate #1)

A sign used in 17th century alchemy to designate calcinated copper.

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Calcinated copper (alternate #2)

A sign used in 17th century chemistry to designate calcinated copper.

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Calcinated copper (alternate #3) or nickel

In alchemy, this symbol could indicate either calcinated copper or the metal nickel.

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Calcination

Calcination (also referred to as calcining) is a thermal treatment process in absence of air applied to ores and other solid materials to bring about a thermal decomposition, phase transition, or removal of a volatile fraction. The calcination process normally takes place at temperatures below the melting point of the product materials. Calcination is not the same process as roasting. In roasting, more complex gas–solid reactions take place between the furnace atmosphere and the solids.

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Calcination (alternate)

One of several symbols used in alchemy to represent calcination.

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Cement (alchemy)

A symbol from 17th century chemistry indicating cement or putty.

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