Sequatchie Gray and Varigated Flagstone and Strip Rubble

Technical Data for Sequatchie Gray and Varigated Flagstone and Strip Rubble.

Property Value
Type Tennessee Quartzite
Classification III quartzite; flagstone
Colors gray or varigated
Patterns random; irregular
Finish natural cleft
Absorption Max. 1%
Density Min. 160#/ft
Compressive strength Min. 2000 psi
Modulus of rupture 2000 psi
Abrasion resistance 8

Quartzitic Sandstone.

Geologic Designation: Quartzitic Ferruginous Sandstone

Trade Names: Tennessee Quartzite, Crab Orchard Stone, Tennessee Stone, Sequatchie Stone

Color Range: Variegated (earth tones: shades of tan, brown, Beige, buff, yellow, pink and cream with heavy to light iron veining) Blue gray tones.

Applications: Exterior, interior, walls, flooring, paving, treads, Sills, hearths, mantels, wall coping, pool coping, Fireplace surrounds, countertops, curbing, Landscape and Architectural trim.

Types: Dimension Stone, Sawn bed, Flagstone, Fieldstone


Standard Thickness: 7/8” & 2 1/4” Sawn
Flooring and Paving: 6” multiples
Hearths and treads widths: 6”, 8”, 10”, 12”, 14”, 16”, 18”, 20”, 24”, 30” cut to size orders.

Textures: Sawn, Honed, Polished, Natural Cleft, Sand-Blasted, Rock Faced, Split Face, Sawn Edge, Bullnosed Edge and other custom finishes.

Physical Properties: Absorption (ASTM C-97) 1.923%
Density (ASTM C-97) 156pcf
Bulk Specific Gravity 2.495
Compressive Strength (ASTMC170) 16,550 psi
Flexural Strength (ASTM C-880) 1,580 psi

Test Procedure: Modified ASTM C666: “Standard Test Method for Resistance of Concrete to Rapid Freezing and Thawing”. Five 3” x 3”x 3” specimens were subjected to 300 freeze Thaw cycles as per ASTM C666 Procedure A (freezing and thawing in water). Before and after Freeze/thaw cycling the specimens were observed for Visible cracks, broken pieces, or other visible defects.

Test Results: All five (5) specimens showed no visible defects after 300 cycles of freeze/thaw.


Contact Us

Stone Sales and Service, Inc.
579 Quarry Road
(mailing P. O. Box 685)
Dunlap, TN 37327
(423)949-5021 office
(423)949-4671 fax
Hours: Monday through Friday 7:00am to 4:30 pm (EASTERN TIME)

Email: [email protected]
[email protected]
Midwest Outside Sales:
[email protected]