Quartz with an Amethyst phantom and Hematite inclusions Red Devil Pocket - Orange River - South Africa Specimen and photo : (C) Marco Frigerio - Classic Rocks and Gems Amethyst phantoms are not uncommon, sometimes together with smoky phantoms An outline of the shape of a smaller crystal that is visible inside a crystal is called a ghost or a phantom. There are two possible causes: •Minerals have precipitated on the crystal for a short time during crystal growth and have later been embedded in the growing crystal. If minerals precipitate several times during growth, one can see several stacked phantoms, much like Russian Matroska puppets. The phantom is often very faint and ghost-like. This is the classical definition of a phantom. •Growth conditions that led to the inclusion of colorizing trace elements or minerals have changed. It is not uncommon to find clear quartz with a milky quartz phantom. Other examples would be a smoky quartz phantom inside a colorless rock crystal, or thin zones of amethyst coloration that are parallel to the rhombohedral faces. Text : quartzpage.de
Posted on: Sun, 11 Jan 2015 20:23:14 +0000
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