Pyrite xls, "Iron Cross" twins; Extertal, Lippe, Germany; 1 unique lot

Pyrite xls, "Iron Cross" twins from Extertal in Lippe, Germany. 1 unique lot.

This lot contains numerous well-preserved pyrite crystals showing classic octahedral, cuboctahedral and cubic growth forms. A special highlight are the multiple contact twins of the "Iron Cross" type, which are well developed and sharp-edged. The crystals are up to thumbnail size and show metallic to dull surfaces in varying shades of bronze, brown and gold, resulting from natural oxidation processes. All pieces are matrix-free and selected for their aesthetic and typological consistency.

Geology & Origin

"Iron Cross" twins from Extertal are textbook examples of pyrite penetration twins, formed along the {111} planes of the isometric system. They are among the most characteristic collector’s items from northwestern Germany. The locality is known for producing sharp, well-formed crystals in historic exposures, although such finds have become increasingly rare due to limited access and natural overgrowth of old sites.

Usage Instructions

This product is ideal as a collector's item, decorative element, teaching material, or for scientific and exhibition purposes.

Legal Notices

Safety

We accept no liability for damages resulting from improper and/or non-recommended use. Please carefully assess the suitability of the product before any alternative use.

Responsible Provider

Mikon Mineralienkontor GmbH
Steinslieth 11
D-37130 Gleichen OT Klein Lengden

Email: info@mikon-online.com