Images
Formula: KMg2TiFe3+2(PO4)4(OH)3.15H2O
Hydrated phosphate, paulkerrite group
Crystal System: Orthorhombic
Specific gravity: 2.36 measured and calculated
Hardness: 3
Streak: White
Colour: Colourless to very light yellow-brown
Environments
Paulkerrite occurs as an alteration product of triplite in complexly
zoned granite
pegmatites
(Webmin, HOM)
At the type locality, the 7U7 Ranch, Bagdad Mine area, Hillside, Eureka Mining District, Yavapai county, Arizona, USA,
paulkerrite is a secondary phosphate in a
granite
pegmatite, occurring on fracture surfaces in massive
triplite. Associated minerals include
triplite, bermanite,
phosphosiderite,
leucophosphite,
strengite and switzerite
(HOM, Minrec 15.303-306, AM 70.875).
Back to Minerals