Jahnsite

Availability

Available

Price

$35.00

Size

4.5 x 3 x 3.5 cm - Miniature 

Formula

CaMn²⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂·8H₂O (RRUFF)

Locality

Tip Top mine, Custer Co., South Dakota, United States

Tagged

phosphate , pegmatite mineral

Yellow to yellowish green Jahnsite to about 0.5mm in clusters to 3mm. It is associated with dark green to rusty red Mitridatite. If I had to guess it is Jahnsite-(CaMnMg).