Rapidcreekite
A variety of Minerals
What is Rapidcreekite?
Rapidcreekite is transparent and white to colorless. The mineral occurs as isolated clusters or pervasive crusts of radiating sprays of acicular crystals up to 3 mm (0.12 in) in length.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Rapidcreekite 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.
Rapidcreekite Localities Map
See where Rapidcreekite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Formation of Rapidcreekite
Rapidcreekite occurs in association with aragonite, gypsum, and kulanite. It has been found in Canada, Germany, Norway, and Romania. The rare mineral occurs as a secondary phase that formed along the surfaces of joints and bedding planes in a quartz-rich sideritic formation. In the Rapid Creek area, the formation occurred in Albian ironstones and shales.
Composition of Rapidcreekite
In the structure of rapidcreekite, there are two distinct calcium sites coordinated by six oxygen anions and two H2O groups arranged as a square antiprism. The sulfur site is tetrahedrally coordinated by oxygen anions and the carbon site is coordinated by a triangle of oxygen anions. The structural unit of rapidcreekite is a sheet that consists of edge-sharing CaΦ8 polyhedra (Φ, unspecified species: O or OH) cross-linked by carbonate and sulfate groups. Sheets are held together by weakening hydrogen bonds, accounting for the perfect cleavage along {100}. The structure and composition of rapidcreekite is similar to that of gypsum. If half of the sulfate groups in gypsum were replaced by carbonate, the formula of rapidcreekite is obtained. If gypsum were transformed by twinning along alternate rows of sulfate groups and the resultant triangles of oxygen along the boundary occupied by carbon, the structure of rapidcreekite would result.
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Quick Facts
Physical Properties
- Color
- White, colourless.
- Hardness (Mohs)
- 2
Chemical Properties
- Chemical Formula
- Ca2(SO4)(CO3) · 4H2O
- Elements
- C, Ca, H, O, S
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Rapidcreekite FAQs
How do I identify Rapidcreekite?
Rapidcreekite can be identified by its hardness of 2 on the Mohs scale, White color. Look for these key characteristics when examining specimens.
What color is Rapidcreekite?
Rapidcreekite typically appears in White, colourless.. Color can vary depending on impurities and formation conditions.
How hard is Rapidcreekite?
Rapidcreekite has a hardness of 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
What is the formation of rapidcreekite of Rapidcreekite?
Rapidcreekite occurs in association with aragonite, gypsum, and kulanite. It has been found in Canada, Germany, Norway, and Romania. The rare mineral occurs as a secondary phase that formed along the surfaces of joints and bedding planes in a quartz-rich sideritic formation. In the Rapid Creek area, the formation occurred in Albian ironstones and shales.
What is the composition of rapidcreekite of Rapidcreekite?
In the structure of rapidcreekite, there are two distinct calcium sites coordinated by six oxygen anions and two H2O groups arranged as a square antiprism. The sulfur site is tetrahedrally coordinated by oxygen anions and the carbon site is coordinated by a triangle of oxygen anions. The structural unit of rapidcreekite is a sheet that consists of edge-sharing CaΦ8 polyhedra (Φ, unspecified species: O or OH) cross-linked by carbonate and sulfate groups. Sheets are held together by weakening hydrogen bonds, accounting for the perfect cleavage along {100}. The structure and composition of rapidcreekite is similar to that of gypsum. If half of the sulfate groups in gypsum were replaced by carbonate, the formula of rapidcreekite is obtained. If gypsum were transformed by twinning along alternate rows of sulfate groups and the resultant triangles of oxygen along the boundary occupied by carbon, the structure of rapidcreekite would result.
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