African Dalmatha Granite

African Dalmatha Granite is a distinctive natural stone quarried in Angola, characterized by its striking contrast between a light ivory to off-white background and densely scattered dark mineral inclusions. The stone presents a bold, natural “dalmatian-like” speckled appearance, making it a visually dynamic material suitable for both modern architectural designs and high-contrast decorative applications. Its strong mineral contrast and durable crystalline structure provide excellent performance in both interior and exterior environments.

Texture & Structure

African Dalmatha Granite has a medium to coarse-grained crystalline texture with a dense interlocking igneous structure. The stone is compact and uniform, ensuring high durability and consistent fabrication performance.

• Texture: Medium to coarse crystalline
• Structure: Dense igneous interlocking minerals
• Surface character: Granular and consistent
• Compactness: High density, low porosity
• Grain distribution: Even but strongly contrasted mineral clusters

Pattern & Appearance

• Base color: White, off-white, or ivory
• Contrast minerals: Black, dark brown, and grey
• Pattern: Heavy speckling with strong contrast
• Visual effect: Bold “dalmatian” appearance
• Movement: Non-directional, uniform distribution
• Style: High-impact, decorative natural stone

Each slab presents a naturally unique but consistently patterned appearance.

Physical & Mechanical Properties

• PropertyValueDensity: 2,670 – 2,730 kg/m³
• Water Absorption: 0.10 – 0.35%
• Apparent Porosity: 0.3 – 0.8%
• Compressive Strength: 200 – 240 MPa
• Flexural Strength: 15 – 18 MPa
• Tensile Strength: 8 – 12 MPa
• Abrasion Resistance: Excellent
• Frost Resistance: Excellent
• Impact Resistance: High
• Hardness (Mohs): 6 – 7

Chemical Composition (% by Weight)

• SiO₂ (Silicon Dioxide): 67 – 74%
• Al₂O₃ (Aluminum Oxide): 13 – 16%
• K₂O (Potassium Oxide): 4 – 6%
• Na₂O (Sodium Oxide): 2 – 4%
• Fe₂O₃ (Iron Oxide): 1 – 4%
• CaO (Calcium Oxide): 1 – 2%
• MgO (Magnesium Oxide): 0.5 – 1.5%
• TiO₂ (Titanium Dioxide): 0.2 – 0.7%

Mineral Composition (% by Weight)

• Quartz: 25 – 35%
• Feldspar: 45 – 55%
• Biotite: 8 – 12%
• Hornblende: 5 – 10%
• Magnetite / dark accessories: 1 – 5%
• Accessory minerals: 1 – 3%

Available Surface Finishes

African Dalmatha Granite is available in: Polished, Honed, Leathered, Brushed, Flamed, Sandblasted, Waterjet, Machine-cut

Applications

Interior Applications

• Flooring
• Wall cladding
• Kitchen countertops
• Bathroom vanities
• Staircases
• Tabletops
• Feature walls

Exterior Applications

• Building façades
• Pavements
• Walkways
• Landscaping features
• Outdoor stairs
• Public plazas

Commercial Applications

• Hotels
• Airports
• Shopping malls
• Hospitals
• Office buildings
• Public infrastructure

Maintenance Guidelines

• Clean using pH-neutral stone cleaners
• Avoid acidic or abrasive products
• Seal periodically for exterior and high-traffic use
• Remove spills promptly to avoid staining
• Use protective pads under heavy objects
• Regular maintenance preserves polish and contrast
• Reseal every 2–4 years depending on usage

African Dalmatha Granite is a high-contrast Angolan natural stone defined by its ivory base and bold dark mineral speckling. Its excellent mechanical strength, low water absorption, and visually striking pattern make it ideal for both architectural and decorative applications requiring durability and strong aesthetic impact.