This seamless 3D texture presents an ultra-high-definition 8K PBR representation of bituminous coal, capturing the natural, rough surface of this organic mineral substrate in exceptional detail. Bituminous coal is composed primarily of compressed plant material with varying degrees of carbon content, bound together by natural organic binders and fine mineral inclusions. This texture highlights the characteristic deep black coal color, enriched with subtle graininess and coarse micro-variations that reflect the natural arrangement of coal particles and embedded mineral fragments. The surface finish is dry and cracked, showcasing typical weathering patterns and porosity that arise from exposure and oxidation, lending a realistic tactile quality suitable for photorealistic rendering projects.
In terms of PBR channels, the BaseColor (Albedo) captures the coal’s rich, deep black tone with slight tonal variations that reveal fine grain and natural impurities. The Normal map emphasizes the rough, uneven surface with pronounced cracks and grain orientations, simulating the tactile irregularities of bituminous coal. Roughness is calibrated to reflect the matte, non-metallic finish of coal, while the Metallic channel remains near zero to represent the organic, non-metallic nature of the material. Ambient Occlusion enhances the perception of depth around cracks and crevices, and the Height/Displacement map adds subtle relief for enhanced realism in close-up renders. This texture is optimized for use in Blender, Unreal Engine, and Unity, ensuring seamless integration and high fidelity across diverse 3D modeling and rendering workflows.
For practical application, consider adjusting the UV scale to maintain the balance between visible grain detail and overall surface coherence, especially in large-scale scenes. Fine-tuning the roughness map can help simulate different lighting conditions, from dimly lit underground mines to outdoor daylight environments, by controlling how light interacts with the coal’s matte surface. This 8K seamless bituminous coal surface texture is ideal for any project requiring a realistic, high-resolution depiction of rough, natural coal surfaces with visible cracks and detailed grain structures, enhancing the authenticity of industrial, geological, or environmental visualizations.
The coal surface rough texture exhibits a deep black color with high fidelity and detail captured in 8k resolution, making it ideal for unreal blender ready PBR material applications.
How to Use These Seamless PBR Textures in Blender
This guide shows how to connect a full PBR texture set to Principled BSDF in Blender (Cycles or Eevee). Works with any of our seamless textures free download, including PBR PNG materials for Blender / Unreal / Unity.
What’s inside the download
*_albedo.png — Base Color (sRGB)*_normal.png — Normal map (Non-Color)*_roughness.png — Roughness (Non-Color)*_metallic.png — Metallic (Non-Color)*_ao.png — Ambient Occlusion (Non-Color)*_height.png — Height / Displacement (Non-Color)*_ORM.png — Packed map (R=AO, G=Roughness, B=Metallic, Non-Color)
Quick start (Node Wrangler, 30 seconds)
- Enable the addon: Edit → Preferences → Add-ons → Node Wrangler.
- Create a material and select the Principled BSDF node.
- Press Ctrl + Shift + T and select the maps
albedo, normal, roughness, metallic (skip height and ORM for now) → Open.
The addon wires Base Color, Normal (with a Normal Map node), Roughness, and Metallic automatically.
- Add AO and Height using the “Manual wiring” steps below (5 and 6).
Manual wiring (full control)
- Create a material (Material Properties → New) and open the Shader Editor.
- Add an Image Texture node for each map. Set Color Space:
- Albedo → sRGB
- AO, Roughness, Metallic, Normal, Height, ORM → Non-Color
- Connect to Principled BSDF:
albedo → Base Colorroughness → Roughnessmetallic → Metallic (for wood this often stays near 0)normal → Normal Map node (Type: Tangent Space) → Normal of Principled.
If details look “inverted”, enable Invert Y on the Normal Map node.
- Ambient Occlusion (AO):
- Add a MixRGB (or Mix Color) node in mode Multiply.
- Input A =
albedo, Input B = ao, Factor = 1.0.
- Output of Mix → Base Color of Principled (replaces the direct albedo connection).
- Height / Displacement:
Cycles — true displacement
- Material Properties → Settings → Displacement: Displacement and Bump.
- Add a Displacement node: connect
height → Height, set Midlevel = 0.5, Scale = 0.02–0.08 (tune to taste).
- Output of Displacement → Material Output → Displacement.
- Add geometry density (e.g., Subdivision Surface) so displacement has polygons to work with.
Eevee (or lightweight Cycles) — bump only
- Add a Bump node:
height → Height.
- Set Strength = 0.2–0.5, Distance = 0.05–0.1, and connect Normal output to Principled’s Normal.
Using the packed ORM texture (optional)
Instead of separate AO/Roughness/Metallic maps you can use the single *_ORM.png:
- Add one Image Texture (Non-Color) → Separate RGB (or Separate Color).
- R (red) → AO (use it in the Multiply node with albedo as above).
- G (green) → Roughness of Principled.
- B (blue) → Metallic of Principled.
UVs & seamless tiling
- These textures are seamless. If your mesh has no UVs, go to UV Editing → Smart UV Project.
- For scale/repeat, add Texture Coordinate (UV) → Mapping and plug it into all texture nodes.
Increase Mapping → Scale (e.g., 2/2/2) to tile more densely.
Recommended starter values
- Normal Map Strength: 0.5–1.0
- Bump Strength: ~0.3
- Displacement Scale (Cycles): ~0.03
Common pitfalls
- Wrong Color Space (normals/roughness/etc. must be Non-Color).
- “Inverted” details → enable Invert Y on the Normal Map node.
- Over-strong relief → lower Displacement Scale or Bump Strength.
Example: Download Wood Textures and instantly apply parquet or rustic planks inside Blender for architectural visualization.
To add the downloaded texture, go to Add — Texture — Image Texture.
Add a node and click the Open button.
Select the required texture on your hard drive and connect Color to Base Color.
