125 - Cacoxenite

ID	125
Mineral	Cacoxenite
Location	Rotlaufchen Mine - Lahnau - Hesse - Germany
Fluorescence	LW-UV: close SW-UV: close
Mindat.org	View Cacoxenite information at mindat.org

ID	840
Long ID	1:1:840:6
Formula	`Fe³⁺₂₄AlO₆(PO₄)₁₇(OH)₁₂ · 75H₂O`
IMA Status	0 1
Other Occurrences	Common accessory mineral in oxidation zone of magnetic and limonite iron ores, novaculites, rarely in iron rich sediments and soils.
Discovery Year	1825
Diapheny	Translucent
Colour	Yellow to brownish yellow, reddish orange, golden yellow, deep orange, green
Hardness (min)	3.0
Hardness (max)	4.0
About the name	From the Greek κακός for "bad" and ξένος for "guest" due to the fact that the phosphorous content of cacoxenite lessens the quality of iron smelted from ore containing it.
Crystal System	Hexagonal
Morphology	Crystals crudely hexagonal, acicular [0001], with a hexagonal cross section at times and indistinct pyramidal faces. Commonly in compact, concentric, spherical to radial aggregates. In bundles, randomly fibrous; as coatings or intergranular cement.
shortcode_ima	Cac

Cacoxenite