Riebeckite quartz Specimen- 70 g - (1)

Riebeckite is a silicate mineral belonging to the amphibole group, often recognized by its dark blue to black fibrous crystals. This mineral sometimes forms as finely fibrous masses and is noted for this signature coloration. Quartz, one of the most abundant and well-known minerals, frequently associates with riebeckite in geological environments where silica-rich fluids interact with iron-bearing minerals. A riebeckite quartz specimen offers an opportunity to observe these contrasting crystal forms and colors, illustrating mineral formation processes in metamorphic rocks. The 70-gram specimen size suggests a well-balanced representation of these minerals for collectors or enthusiasts.