One of the mysteries of the English language finally explained.
A mineral of the serpentine group, occurring typically as thin green plates.
- ‘Bowenite is a massive, fine-grained and dense variety of antigorite.’
- ‘The darker shades of massive antigorite are usually what is referred to as ‘precious serpentine’ - the stuff that can be used to make decorative items of a luscious deep green color.’
- ‘Several long-thin grains of antigorite are visible as well.’
- ‘Spectrally the mineral separates do not show absorptions due to any mineral species other than antigorite.’
- ‘The crystal structure of antigorite could not be solved, because of very fine crystal size and many defects.’
- ‘The serpentine minerals antigorite and lizardite are clay-like constituents of tremolitic talc.’
- ‘Dumps and outcrops in the vicinity have produced hand specimens of antigorite, chrysotile, and impressive crystals of grass-green talc with snow-white dolomite.’
- ‘It is definitely of later formation than the antigorite, and in numerous instances this mineral is itself flecked with platelets of talc indicating a replacement of the former by the latter.’
- ‘The most distal alteration is volumetrically minor and involves alteration of olivine to antigorite and magnesite.’
- ‘Serpentine is a common name for the minerals antigorite, lizardite and chrysotile.’
- ‘The massive, pale green variety of antigorite is sometimes called ‘williamsite’.’
- ‘As seen in the granite, subhedral to anhedral grains of fayalite are fractured and show varying stages of alteration to hematite, antigorite, calcite, and magnetite.’
Mid 19th century: from Antigorio, a valley in Piedmont, Italy, + -ite.
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