Where is Pink Cobaltoan Calcite found?
CaCO3 (Cobaltoan Calcite)
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Open the appPink Cobaltoan Calcite occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Pink Cobaltoan Calcite
Bou Azzer, Anti-Atlas Mountains, Morocco
World-renowned for producing some of the finest and most intensely colored pink cobaltoan calcite specimens, often associated with erythrite and other cobalt minerals.
Katanga Copperbelt, Democratic Republic of Congo
Known for significant deposits of cobalt, producing cobaltoan calcite, though often less vibrant than Moroccan material.
Tsumeb Mine, Namibia
Historically famous for a wide array of rare minerals, including cobaltoan calcite, often in association with other secondary minerals.
Alston Moor, Cumbria, England
Occurrences of cobaltoan calcite have been noted in some of the historic lead-zinc mining districts.
Collecting tips
- Look for Cobalt-Rich Environments. Focus exploration in areas known for cobalt-nickel-silver mineralization or polymetallic sulfide deposits, particularly in their oxidized zones or associated hydrothermal veins.
- Identify Associated Minerals. Cobaltoan calcite often co-occurs with other cobalt minerals (e.g., erythrite), various sulfide minerals (e.g., chalcopyrite, pyrite), quartz, and other carbonates. The presence of these minerals can indicate a favorable environment.
- Observe Color and Crystal Habit. The distinctive pink to reddish-pink color and typical calcite crystal habits (rhombohedral, botryoidal) are key visual identifiers. Look for these characteristics on exposed rock surfaces or in mine dumps.
- Test for Effervescence. Like all calcite, cobaltoan calcite will effervesce (fizz) vigorously when a drop of dilute hydrochloric acid (HCl) is applied to its surface. This helps distinguish it from similar-looking silicates or other non-carbonate minerals.
Quick Check
- Color:
- Pink to reddish-pink
- Luster:
- Vitreous to sub-vitreous
- Streak:
- White
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