Campigliaite
A variety of Minerals
What is Campigliaite?
Campigliaite is a copper and manganese sulfate mineral with a chemical formula of Cu4Mn(SO4)2(OH)6·4H2O. It has a chemical formula and also a crystal structure similar to niedermayrite, with Cd(II) cation replacing by Mn(II). The formation of campigliaite is related to the oxidation of sulfide minerals to form sulfate solutions with ilvaite associated with the presence of manganese. Campigliaite is a rare secondary mineral formed when metallic sulfide skarn deposits are oxidized. While there are several related associations, there is no abundant source for this mineral due to its rare process of formation. Based on its crystallographic data and chemical formula, campigliaite is placed in the devillite group and considered the manganese analogue of devillite. Campigliaite belongs to the copper oxysalt minerals as well followed by the subgroup M=M-T sheets. The infinite sheet structures that campigliaite has are characterized by strongly bonded polyhedral sheets, which are linked in the third dimension by weaker hydrogen bonds.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Campigliaite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Campigliaite Localities Map
See where Campigliaite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Characteristics of Campigliaite
Campigliaite crystals are transparent with a vitreous luster. Crystals of campigliaite and gypsum are often mixed but small amounts of pure crystals appear to grow on gypsum. Campigliaite crystals are flattened on the {100} and elongated on the [010]. These crystals are light or pale blue in color but under light transmission, the crystal color changes to pale greenish blue. The measured density was 3.0 g cm by heavy-liquid method but this is uncertain due to the size of the crystals. The calculated density was 3.063 g cm with a normalized empirical formula of 7 H2O.
Composition of Campigliaite
When tested with a Weissenberg camera and single-crystal diffractometer, campigliaite is found to be twinned with the (100) as its twinning plane. Campigliaite is monoclinic with a point group of 2 and space group of C2. The infinite sheet structures that campigliaite has are characterized by strongly bonded sheets of polyhedra which are linked in the third dimension by the weaker hydrogen bonds.
Quick Facts
Physical Properties
- Color
- Light blue
- Density
- 3.06 g/cm³
Chemical Properties
- Chemical Formula
- Mn2+Cu4(SO4)2(OH)6 · 4H2O
- Elements
- Cu, H, Mn, O, S
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Campigliaite FAQs
How do I identify Campigliaite?
Campigliaite can be identified by its Light blue color. Look for these key characteristics when examining specimens.
What color is Campigliaite?
Campigliaite typically appears in Light blue. Color can vary depending on impurities and formation conditions.
What is the characteristics of campigliaite of Campigliaite?
Campigliaite crystals are transparent with a vitreous luster. Crystals of campigliaite and gypsum are often mixed but small amounts of pure crystals appear to grow on gypsum. Campigliaite crystals are flattened on the {100} and elongated on the [010]. These crystals are light or pale blue in color but under light transmission, the crystal color changes to pale greenish blue. The measured density was 3.0 g cm by heavy-liquid method but this is uncertain due to the size of the crystals. The calculated density was 3.063 g cm with a normalized empirical formula of 7 H2O.
What is the composition of campigliaite of Campigliaite?
When tested with a Weissenberg camera and single-crystal diffractometer, campigliaite is found to be twinned with the (100) as its twinning plane. Campigliaite is monoclinic with a point group of 2 and space group of C2. The infinite sheet structures that campigliaite has are characterized by strongly bonded sheets of polyhedra which are linked in the third dimension by the weaker hydrogen bonds.
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