Mineraloids and their features
Mineraloids and their features
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A mineraloid is a naturally occurring mineral-like substance that does not demonstrate crystallinity. Mineraloids are amorph.
Opal with Manganese Dentrites
Opal with Manganese Dentrites
Eskişehir, Türkiye
Obsidian
Obsidian
Jet
Jet
A hard gem-quality hydrocarbon
From Erzurum, Türkiye
Menilite
Menilite
Opaline concretions found in marls, gypsums and shales. Sometimes considered a variety of opal but probably impure and really just young Flint nodules which haven’t recrystallised to quartz yet; thus really a rock rather than a mineral.
Limonite
Limonite
Chemical Formula : FeO(OH)·nH2O
Mohs Scale : 4 - 5.5
Opal
Opal
Green Opal
Green Opal
Chemical Formula : SiO2·nH2O (hydrated silica)
Mohs Scale : 5.5 - 6
Limonite
Limonite
From Egypt
Obsidian
Obsidian
Limonite
Limonite
From Egypt
Opal
Opal
Shungite
Shungite
Shungite is a black mineraloid made of up to 99 percent carbon. Mohs scale of shungite is around 3.5 -4
Obsidian
Obsidian
Limonite
Limonite
Chrysocolla
Chrysocolla
Menilite
Menilite
Opal
Opal
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