Dendritic Limestone
What is Dendritic Limestone?
Dendritic Limestone is a sedimentary rock characterized by the presence of dendritic patterns, which are branching, tree-like formations. These patterns are typically created by the deposition of iron or manganese oxides within the limestone. The limestone itself is composed primarily of calcium carbonate, often formed from the accumulation of marine organisms' shells and skeletons. The dendritic patterns are usually black or brown and contrast with the lighter color of the limestone, creating visually striking patterns. The formation of these dendrites occurs when mineral-rich fluids seep through the rock, and the minerals precipitate out in these characteristic branching forms.
Optical Properties
- Refractive Index
- 1.486-1.658
- Birefringence
- 0.172
- Pleochroism
- None
- Optical Character
- Biaxial negative
Discover Values
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Dendritic Limestone 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.
Dendritic Limestone Localities Map
See where Dendritic Limestone is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Typically light gray, tan, or cream for the limestone, with black or brown dendrites
- Hardness (Mohs)
- 3
- Density
- 2.7 g/cm³
- Luster
- Dull to earthy
- Crystal System
- Amorphous
Chemical Properties
- Chemical Formula
- CaCO3 (calcite) with FeO or MnO2 (iron or manganese oxides)
- Elements
- Ca, C, O, Fe, Mn
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Dendritic Limestone FAQs
How do I identify Dendritic Limestone?
Dendritic Limestone can be identified by its hardness of 3 on the Mohs scale, Typically light gray color, Dull to earthy luster, Amorphous crystal system. Look for these key characteristics when examining specimens.
What color is Dendritic Limestone?
Dendritic Limestone typically appears in Typically light gray, tan, or cream for the limestone, with black or brown dendrites. Color can vary depending on impurities and formation conditions.
How hard is Dendritic Limestone?
Dendritic Limestone has a hardness of 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.