Chemical formula : Iron(II,III) oxide 

Mohs Scale : 5.5- 6.5

Crystal System : Cubic

Konya,  Türkiye

Chemical formula :  AlO(OH) 

Mohs Scale : 6.5 - 7  

Crystal System : Orthorhombic

• Csarite, ottomanite, Turkizite and zultanite are trade names for gem-quality diaspore (also known as Turkish diaspore) from the İlbir Mountains of southwest Turkey. 

Black dendritic films of various visually indistinguishable black manganese oxides, may consist of birnessite, coronadite, cryptomelane, hollandite, romanèchite, todorokite or other species. 

From Kütahya, Türkiye.

Chemical formula :  FeO(OH) 

Mohs Scale : 5, 5.5

Crystal System : Orthorhombic

Chemical formula : Fe2O3 

Mohs Scale : 5.5 - 6.5

Crystal System : Trigonal

Melting Point : 1538 C

Chemical formula : PbMoO4 

Mohs Scale : 3

Crystal System : Tetragonal

From Mexico

Hematite

From Kütahya, Türkiye