G312 Granite

About
Item Details
- Material Type:
- Granite
- Origin:
China (Jiangxi Province) - Recommended Usage:
- Kitchen and bathroom countertops, monuments, building stone, ornamental stone, stairs, interior, exterior wall and floor applications, mosaic, waterjet pattern, wall panels, table tops, window sills, balustrades, columns, wall and pool copings, pool pavers, sculptures, fireplaces, pavers, cobbles, curbstone
- Additional Names:
- Shandong Green Granite, Shandong Evergreen Granite, Beida Green Granite, Beida Qing Granite, Bei Da Green Granite, G3607 Granite, North Daqing Granite, in China Stone Market:北大青(Běidà Qīng), G312 Granite
- Finished Surface:
- Polished,Flamed,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Acid Washing,Combed,Leathered,Water Jet,Filled,Chiseled,Pickling
Testing
- Water Absorption:
- ≤ 0.30% by weight
- Density:
- 2650–2700 kg/m³
- Flexural Strength:
- 12–18 MPa
- Compressive Strength:
- 150–180 MPa
Description
G312 Granite is a durable and visually striking natural stone quarried in the Jiangxi Province of China. G312 Granite is recognized for its fine- to medium-grain texture, dark petroleum-green base color, and distinct black speckled pattern, making it a reliable and elegant choice for a wide range of architectural and design applications.
Appearance & Texture
- Color Base: Dark petroleum green
- Pattern: Uniform distribution of black mineral speckles, giving the stone depth and richness
- Grain Size: Fine to medium
- Overall Look: Sophisticated, understated, and suitable for both modern and classical design themes
Physical & Mechanical Properties
(Typical values for this granite type; actual test data may vary by block/batch)
- Density : ~2,650–2,700 kg/m³
- Water Absorption : ≤ 0.30% by weight
- Compressive Strength : 150–180 MPa
- Flexural Strength : 12–18 MPa
- Abrasion Resistance : High
- Hardness (Mohs) : 6–7
Chemical & Mineral Composition (Approximate % by weight)
Mineral Composition
- Quartz: 20–30%
- Feldspar (Plagioclase): 50–60%
- Biotite / Hornblende: 10–15%
- Other Accessory Minerals: 1–5%
Chemical Composition
- SiO₂: 60–68%
- Al₂O₃: 14–18%
- Fe₂O₃ + FeO: 3–5%
- CaO: 2–4%
- MgO: 1–3%
- Na₂O + K₂O: 3–6%
Applications
G312 Granite is known for its versatility and durability, making it ideal for:
Interior Uses
- Kitchen countertops
- Bathroom vanity tops
- Interior flooring
- Wall cladding
- Staircases
Exterior Uses
- Building façades
- Outdoor paving
- Landscaping elements
- Pool surrounds
- Monuments and public installations
Its low porosity and excellent strength make it highly suitable for high-traffic and outdoor environments.
Maintenance
Easy to maintain, requiring only regular cleaning with mild detergents Periodic sealing is recommended for interior polished surfaces Highly resistant to stains, scratches, and weathering





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