Pannonia Grüneschiefer (Pannonia Gruenschiefer)

Pannonia Grueneschiefer is a striking chlorite schist known for its rich dark green background, forming a dramatic foundation accented by distinctive light jade green and white grains. These mineral grains weave naturally across the surface, creating a lively and textured aesthetic. Quarried in the town of Rechnitz, located in southern Burgenland, Austria, near the Geschriebenstein Mountain, this stone blends a unique geological character with refined natural beauty. In some markets, it is referred to as a slate for marketing purposes, but geologically, Pannonia Grüneschiefer is correctly classified as a schist — a fine- to medium-grained metamorphic rock with foliated texture caused by the alignment of platy minerals like chlorite and muscovite.

Texture and Pattern:

Texture: Fine- to medium-grained, moderately foliated surface with occasional natural clefts

Pattern: Subtle, flowing veining of light green and white minerals across a deep green base, creating a dynamic, lively appearance

Technical Test Results:

Water Absorption...0.34 %

Density...2,930 kg/m³

Flexural Strength...19.9 MPa

Compressive Strength...94.8 MPa

Hardness (Mohs Scale)...~5.5–6

These properties make Pannonia Grüneschiefer highly durable and suitable for a variety of climates, including freeze-thaw conditions.

Chemical and Mineral Composition (% by weight):

Mineral Composition:

• Chlorite (mainly clinochlore): 45–55%
• Quartz: 20–25%
• Plagioclase Feldspar: 10–15%
• Muscovite/Sericite: 5–8%
• Accessory minerals (magnetite, epidote, titanite): ~2–3%

Chemical Composition:

• SiO₂ (Silicon Dioxide): 45–50%
• Al₂O₃ (Aluminum Oxide): 12–16%
• Fe₂O₃ (Iron Oxide): 8–12%
• MgO (Magnesium Oxide): 5–8%
• CaO (Calcium Oxide): 2–4%
• Na₂O + K₂O (Sodium and Potassium Oxides): 2–3%

Cutting Sizes (Standard Production):

Tiles:

• 30 × 60 cm (12" × 24")
• 40 × 40 cm (16" × 16")
• 60 × 60 cm (24" × 24")
• 40 × 80 cm (16" × 32")
• Custom dimensions available on request

Slabs:

• Thicknesses: 2 cm (3/4") and 3 cm (1 1/4")
• Large-format slabs available depending on block size

Surface Finish Options:

• Natural Split (Cleft): emphasizes the stone's natural layered character
• Honed: smooth, matte surface highlighting the rich green tones
• Polished: deepens color contrast and enhances veining
• Brushed (Antiqued): softens texture for rustic or aged appearance
• Flamed: adds a rough, slip-resistant surface, ideal for exterior paving
• Sandblasted: fine-textured, slip-resistant surface, suitable for outdoor applications

Usage Applications:

Interior:

• Flooring and wall cladding
• Fireplace surrounds
• Bathroom vanities
• Kitchen countertops (with proper sealing)
• Stair treads and risers

Exterior:

• Facades and cladding
• Outdoor paving and patios
• Garden paths and landscaping stones
• Pool coping and surrounding areas
• Its excellent durability and low water absorption make it suitable for both light and heavy-use areas, indoors and outdoors.

Maintenance Recommendations:

• Cleaning: Use pH-neutral cleaners specifically formulated for natural stone
• Sealing: Recommended, especially for polished or honed surfaces, to enhance stain resistance
• Protection: Avoid harsh acidic or alkaline cleaners
• Regular Care: Periodic resealing (every 1–2 years depending on use) and gentle cleaning will maintain its natural beauty over decades

Summary:

Pannonia Grüneschiefer is a rare and elegant natural stone offering a dramatic yet refined green palette, rich textures, and robust mechanical strength. It’s a perfect choice for projects requiring a timeless yet bold aesthetic, whether in luxurious interiors or striking exterior applications.