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Sample n° 19337
          Minerals found in the sample
          
            
	       
                
           
 
        
        
      
         | Mineral | Formula | Category | Subcategory | Importance | 
|---|---|---|---|---|
| QUARTZ | SiO2 | tektosilicates | - | major | 
           Description
            
     
               Description:
               simple and complex crystals
            
                        
      Origin
    
   
  
    - Country: Rwanda
- Region: Gisenyi
- Locality: Rugendabare, Birikano valley
        Specification
    
    
      
    
 
    
  - 
          Donors: Université Libre de Bruxelles (ULB) Denaeyer (ULB)Donation year: 2020
- 
          Sampling year: 1949Registration date:
- 
          Quantity: 4Size:
- 
          Dimension code 1>2>3: 1Quality code 1>2>3: 1
- 
          Holotype: noParatype: noRadioactive: no
- 
          Thin section: noChemical analysis: noX-Ray spectra: no