Iaşi, Romania
⚒️🏛️ First geological museum in Romania, with more than 25.000 samples of minerals, gemstones and rocks from all over the world. 📷💎
Spinel group 3D Models
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A group of minerals with general formula AB2O4. They share the archetypal spinel structure: a quasi-close-packed arrangement of oxygen ions (ABCABC stacking sequence) with metal ions residing in tetrahedral (A sites) and octahedral (B sites) interstices.