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Blue/Grey Granite

Description

Altamira Granite is charnockitized gneiss, medium-grained with clear to light grey and light brown small crystals with dark grey and black veining with some tiny red background garnets. It is also considered to be a garnetiferous migmatite of the Precambrian period. The veining and colour varies considerably and a small sample of Altamira granite may not be representative of the whole slab therefore swatch samples must be approved for large projects to ensure that the blocks are all extracted from the same quarry face for matching purposes. This stone internationally may be nominated as a granite but in the area of application of the European Standard this stone must be nominated as a migmatite. During the polishing process a clear epoxy resin filler may be used to fill any micro fissures or tiny pitting however this does not affect the integrity of the stone, it merely provides an even smoother surface finish. Altamira Granite is suitable for both interior and exterior use futhermore is frost resistant and with a constant polish.

Products

Suitable for construction projects both commercial and domestic, prefabricated countertops/worktops, vanities, tiles, backsplashes, paving, fireplaces and memorials.

Surface Finishes

Altamira Granite looks best with a gloss polished surface but is also available as honed, leather/satin, river-washed/antique, thermal/flamed, flamed & brushed, water-jet, bush-hammered, sandblast and sawn finish.

Sealing

Test with a small sample. It is possible that a sealant can be used on Altamira Granite however excessive attempts at sealing it could actually create a residue film build-up.

Synonyms

Altamera Blue

Quarry Location

Altamira granite is quarried from our own sheet bedrock quarry near Andhra Pradesh, India. There are more than 40 similar quarries in this region with varying shades from light to dark.

Altamira Granite Sample

Blue/Grey Granite Sample Image

Granite Slabs

Altamira granite slabs are available in standard 20mm and 30mm thickness for random slabs, cut-to-size (dimensioned) and prefabricated to the customer's specifications, 40mm thick are produced but are not usually held in stock for immediate despatch.

Standard Slab Sizes
Large Gangsaw(2800mm & above x 1800mm & above)
Medium Gangsaw(2200mm & above x 1200mm & above)
Vertical Cutter(2200mm & above x 600~900mm)

Premium Quality Slab Sizes
When available 3000+mm x 2000+mm

Granite Countertops
Free length or made to your dimensions, standard sizes are
2400~3200 x 600/630/700/900/1000/1200 x 30 mm

Memorial/Monumental Slabs
50mm through to 200mm thick are cut to customer specifications, please Contact Us with the material(s), sizes and finishes you require.

Granite Tiles

Altamira granite Premium & Commercial quality calibrated, bevelled & grooved matching granite tiles.

Standard Tile Sizes
305 x 305 x 10 mm (12" x 12" x 3/8")
610 x 305 x 10 mm (24" x 12" x 3/8")
400 x 400 x 10 mm (15 3/4" x 15 3/4" x 3/8")
457 x 457 x 10/12 mm (18" x 18" x 3/8~1/2")
610 x 610 x 15/18 mm (24" x 24" x 6/10~7/10")

Furthermore 305/400/457/610 mm x Freelength, normally up to 2000mm (78.75") for you to cut to length on site. Longer lengths can easily be produced HOWEVER this could possibly create an on-site handling and cutting production challenge.

As you can see our granite tile production size capabilities are extremely flexible, please Contact Us with the material(s), sizes and finishes you require.

CE Marking Of Natural Stone

Contractors can be responsible for the accuracy of the data, to learn more about this directive please read here.

Technical Specifications

Density: 2842 Kg/M3
Bulk Specific Gravity: 2.85
Water Absorption: 0.13%
Compressive Strength: 231.90 N/mm2
Flexural Strength: 16.40 N/mm2
Modus of Rupture: 17.94 N.mm2
Hardness (Moh's Scale):

Note: These figures and details are given for guidance purposes only, no reliance should be taken as to their accuracy.

Migmatite

A rock at the frontier between igneous and metamorphic rocks. They can also be known as diatexite. In many cases the darker part of the rock, consisting of biotite mica and hornblende, has been intruded by veins of lighter rock consisting of quartz and feldspar. A rock composed of a metamorphic (altered) host material that is streaked or veined with granite rock; the name means "mixed rock". Such rocks are usually gneissic (banded) and felsic rather than mafic in composition.

Granite Quarry Blocks

This is a medium-sized granite quarry yielding several, selectable, grades of granite with blocks suitable for gangsaw size down to economical tile-sized and monument blocks. Extraction commenced in the late 2000s. For commercial projects it is important to ensure that blocks are selected from the same quarry face.

Rough blocks are usually exported by Break Bulk however intermodal containerisation is available at extra cost. Finished products are packed into sea-worthy wooden crates and loaded into containers.

Granite Saws Image Granite Slab Image Warehouse Image Granite Quarry Image



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