Optical Microscopy of Floor Tile (446530)
Analysis of: Sample 1 from floor tile (446530)
Object the sample was taken from: floor tile (446530)
Instrument used: polarizing microscope BX51
Analysed by: Martin Hložek
Rock and mineral fragments
      
    
    
  
  
    
      
      
      
        
      
    
  
      
          
Grain type: fine grain| Non-plastic inclusion | Type | 
|---|---|
| alkali feldspar | Minerals | 
| biotite | Minerals | 
| quartz | Minerals | 
| muscovite | Minerals | 
| cataclasite | Rocks | 
| quartzite | Rocks | 
| metaquartzite | Rocks | 
| gneiss | Rocks | 
| sillimanite gneiss | Rocks | 
| iron oxide-hydroxide klasts | Rocks | 
Binder type: heterogeneous
Grog : Binder: 1:10
Microstructure: fluidal
Porosity: 5%
Firing temperature: 800–900 °C