Hedenbergite Quartz - Specimen steel mandrel set Shaft Diameter: 8mm Overall Length:

Shaft Diameter: 8mm                                                                                                          Overall Length: 180mm

FeO/Fe2_22O3_33

characterized by its bright green color

Description: These Ammonite pairs have been cracked open and sit in limestone cobbles

Hedenbergite Quartz - Specimen steel mandrel set Shaft Diameter: 8mm Overall Length:Mined from: Huanggang Mines Huanggang Fe Sn deposit, in Hexigten Banner, Chifeng City, Inner Mongolia, China. Description: This one of a kind Hedenbergite mineral specimen from Mongolia, China features a dense spray of pale green grey to smoky translucent crystals rising in a radial formation from a darker brown and grey matrix. The crystals show sharp pointed terminations, glassy faces, and a soft frosted surface texture, with tiny dark mineral