Barents Blue Granite Tiles, Norway Blue Granite

Commodity  (Barents Blue)

 Main Type: 

Massive stone (Granite)                  
Sub Type:  Gneiss

Evaluation

 Economical: Significant economic prospect ,

(Confirmed 16.des.2001 by NGU)

Operations

 From - To Activity Comments 

 1989 - 1989 Detail mapping Company/Institution

:Finnmarksforskning

 1989 - 1993 Test mining 

 1993 Regular production

Production

 Prod. method: Open pit mining             Production: 

 Prod. status: Periodic activity

Products: Barents

Blue (tiles)   .

 Commercial Name Product description :  Barents Blue

 Classification : Massive blocks                                                                               Colour

:Bluish

  Play of colours : Uniformity :Medium good

Lithology :Migmatite                                                                                 Grain

size :Fine - medium grained (<1mm - 3 mm)

Mineralogy:

 Feldspar :                          Major

mineral (>10%)

 Quartz:                              
Major mineral (>10%)

 Biotite :                              Major
mineral (>10%)

 Chlorite:                            

Subordinate mineral (1-10%)

 Potassic feldspar           Subordinate mineral (1-10%)

Sericite                Accessory mineral (<1%)

Opaque                               Accessory

mineral (<1%)

 Apatite                               

Accessory mineral (<1%)

Test of

Physical Properties:

  Type of test                                                                    Standard

            Test value

  Specific gravity                                                             DIN 52102

          26,3 g/cm3

  Bending strength                                                         DIN 52112           22,4 N/mm2

  Compressive strength                                                               DIN
52105          182 N/mm2

  Water absorption (weight %)                                                DIN

52103           ,09 %

  Wearing coefficient                                                   ASTM C241-85   1,73 mm

Deposit rock

 Lithology:           Weathering colour: 

 Era:                       

Archean Period: 

 Genesis:             Metamorphic

formation Form: Lens

 Main texture:  

Migmatitic  

 Main grain size:         &nb