Lundhs Marina Granite

Lundhs Marina Granite, also known as Larvikite, is a distinctive and aesthetically pleasing magmatic plutonic rock quarried from the Stålaker quarry in Larvik, Norway. It is known for its coarse-grained texture, dark gray to black background, and the vibrant blue tones with subtle hints of green from the coarse-grained crystals.

Physical and Mechanical Properties:

• Water Absorption:0.04% weight

• Density:2720 kg/m³

• Flexural Strength:13.7 - 14.4 MPa

• Compressive Strength:233 MPa

• Hardness:High, contributing to its durability and scratch resistance.

• Porosity:Very low, reflecting its low water absorption and durability.

• Slip Resistance:Depends on the finish; polished surfaces may be less slip-resistant, while honed or textured surfaces offer better slip resistance.

Chemical and Mineral Composition (% by weight):

• Feldspar: Predominantly blue anorthosite feldspar, with a striking iridescent effect.
• Quartz: Minimal presence, typical of Larvikite.
• Biotite: Adding to the dark hues of the rock.
• Olivine: Contributing to greenish tones.
• Other Minerals: Trace amounts of other crystallized minerals contributing to color variations.

Usage:

• Interior Applications:
• Flooring, countertops, wall cladding, and decorative stone elements.
• Exterior Applications:
• Facades, paving, monuments, and other architectural elements.
• Specialty Uses:
• Reflective qualities make it popular in areas emphasizing aesthetics and light play.

Maintenance:

• Cleaning:
• Use pH-neutral cleaners to avoid damaging the surface.
• Sealing:
• Regular sealing is recommended to protect against stains, particularly in kitchen and bathroom applications.
• Repairs:
• Minor scratches can be buffed out, but deep etching or chips might require professional repair.

Cutting Sizes (cm):

• Customizable according to project requirements; typically available in slabs or tiles of various standard sizes like:
• Slabs (e.g., 240 x 120 cm)
• Tiles (e.g., 60 x 60 cm, 30 x 30 cm)

Surface Finish Options:

• Polished:High gloss, enhancing the stone’s natural colors and iridescent qualities.

• Honed:Smooth with a matte finish, reducing reflectivity while maintaining texture.

• Antiqued/Brushed:Offers a weathered look while providing more traction.

• Flamed:Rough texture, ideal for exterior applications needing slip resistance.

• Bush-Hammered:Heavily textured for maximum grip, frequently used for outdoor paving.

Lundhs Marina Granite's unique appearance and robust physical properties make it a versatile choice for both decorative and functional applications in modern architecture and design. Its ability to withstand wear and the elements while maintaining its stunning visual impact is a testament to its enduring popularity.

Technical Properties – Standard Mean Values

Stone Name: NS-EN 12407 Monzonite (Larvikite)

Structure: Coarse-grained

Texture: Oriented feldspar crystals with lustre

• Compressive Strength - NS-EN 1926 : 233 MPa
• Flexural Strength - NS-EN 12372 : 14.4 MPa
• Flexural Strength (after 48 frost cycles) - NS-EN 12371 : 13.7 MPa
• Abrasion Resistance, Boehme - DIN 52 108 : 7.1 cm³/50 cm²
• Abrasion Resistance, Boehme - NS-EN 14157 (b) : 7110 mm³
• Abrasion Resistance, Wide Wheel - NS-EN 14157 (a) : 16.0 mm
• Water Absorption - NS-EN 13755 : 0.04 % by weight
• Apparent Density - NS-EN 1936 : 2720 kg/m³
• Open Porosity - NS-EN 1936 : 0.1 %
• Breaking Load at Dowel Holes - NS-EN 13364 : 3400 N
• Slip Resistance (Honed Surface) - NS-EN 14231 : 49 SRV (dry) / 6 SRV (wet)
• Rupture Energy (Thickness 30 mm) - NS-EN 14158 : 2.9 J
• Resistance to Ageing by Thermal Shock - NS-EN 14066 : No visual changes, no weight loss

Petrographic Composition (NS-EN 12407)

• Feldspar: 85 %
• Pyroxene: 4 %
• Olivine: 2 %
• Amphibole: 3 %
• Nepheline: 2 %
• Magnetite: 2 %
• Apatite: 1 %
• Biotite: 1 %