Day 29: Jeremejivite
• Category: Borate Mineral
• Formula: Al 6B 5O 15(F,OH) 3
• Crystal System: Hexagonal
• Mohs Scale: 6.5-7.5
seen from China

seen from South Korea

seen from Netherlands
seen from United States
seen from Türkiye

seen from Malaysia
seen from China

seen from Türkiye

seen from Russia

seen from Türkiye

seen from United States

seen from Türkiye
seen from Germany
seen from Sweden

seen from Spain
seen from South Korea
seen from Philippines

seen from Germany

seen from United States
seen from United States
Day 29: Jeremejivite
• Category: Borate Mineral
• Formula: Al 6B 5O 15(F,OH) 3
• Crystal System: Hexagonal
• Mohs Scale: 6.5-7.5
Day 31: Dresden Green Diamond
• Category: Type lla
• Formula: C
• Crystal System: Type lla(?)
• Mohs Scale: 10
Happy Halloween!!!
Day 22: Titanite
• Category: Nesosclicate
• Formula: CaTiSiO5
• Crystal System: Monoclinic
• Mohs Scale: 5.5
Day 20: Cuprite on Malachite
• Category: Copper Ore(?)
• Formula: Cu2CO3(OH)2
• Crystal System: Isometric System Hexoctahedral Class
• Mohs Scale: 3.5-4
Day 17: Cornflower Blue Opal
• Category: Mineraloid
• Formula: SiO2.nH2O
• Crystal System: (?)
• Mohs Scale: 5.0-6.5