Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Kidwellite On Goethite Psm Pyrite

Views:
Watches:
PJM39738

Kidwellite On Goethite Psm Pyrite

Description Tabs

Description
Locality: 
Iron Monarch Quarry, Iron Knob, South Australia, Australia
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 3.3 × 3.8 cm
Description

A real oddity, goethite has completely repaced pyrite from Iron Monarch opencut. This is only the second such specimen I have seen.

The goethite on the base where this specimen was removed from the host rock shows typical foliated  botyroidal goethite formation with curving bands of crystals.

Kidwellite as white mounds has formed on both the exterior of the pseudomorph as wellas in some of the void where the bands of goethite intersect.

Mineral Data
What's on the rock

Kidwellite

Formula: 
NaFe3+9(PO4)6(OH)11·3H2O
Strunz: 
8.DK.20
Hardness: 
3.0
Streak: 
yellow
Type Locality: 
Fodderstack Mountain, Norman, Montgomery Co., Arkansas, USA

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5
Earthstones Australia

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

All goods must be paid for prior to shipping, all bids are binding.

Item Toolbox