M E N U « Home | Browse Minerals | QuizzesMinerals by letter: All | K | G | O | A | H | T | P | C | Q | N | Z | S | E | W | M | B | F | D | L Minerals by class: Silicates | Halides | Carbonates | Sulfates | Oxides | Phosphates | Hydroxides | Native elements | Sulfides Silicate Subclasses: Nesosilicates | Pyroxenes | Amphiboles | Frameworks | Sorosilicates | Cyclosilicates | Phyllosilicates    « Back to mineral listing A N T I G O R I T E Click for expanded view Antigorite  (Serpentine)Mg3Si2O5(OH)4 Class: Silicate Subclass: Phyllosilicate Hardness: 2.5 - 3.5 Density: 2.6 Streak: White Lustre: Greasy or waxy Habit: Lath-shaped crystals. Colours: Shades of green    Crystal System: Monoclinic Cleavage: Perfect basal Fracture: Splintery or conchoidal Magnetism: None Reaction with HCl: Unknown Identification in hand sample: Lustre, colour and habit are indicative. Associations: Formed by hydrothermal action of mafics and ultramafics. Associations may include talc, calcite, brucite, chlorite, magnetite and chromite.    Inaccurate data? Better photos? .

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