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Formula:Ca2Fe2+(PO4)2.4H2O
Hydrated phosphate
Crystal System: Triclinic
Specific gravity: 2.81 measured, 2.81 calculated
Hardness: 3½
Streak: White
Colour: Green, greenish-white, milky white, colourless; colourless to light green in transmitted light.
Luminescence: Not fluorescent under UV
Solubility: Readily soluble in hydrochloric and nitric acids
Environments
Pegmatites occasionally
Sedimentary environments
Anapaite occurs in oolitic iron ore, in the stems of fossil trees and in lacustrine sediments
(Webmin, HOM). It also occurs occasionally in late-stage phosphate mineralisation in
granite pegmatites (Mindat).
Associated minerals include fairfieldite,
goethite, vivianite and
siderite (HOM, Mindat).
Localities
At the type locality, Zheleznyi Rog, Anapa, Taman Peninsula, Krasnodar Krai, Russia, anapaite occurs in
oolitic iron ore,
and in the stems of fossil trees, associated with vivianite,
siderite, mitridatite,
limonite, goethite and
calcite (Mindat).
Anapaite from Zheleznyi Rog - Image
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