Sylacauga marble, also commonly known asAlabama marble, is amarble that is found in a belt running throughTalladega County, Alabama.[1] It is prized for its pure white color and its crystalline structure. The stone is named after the town ofSylacauga, Alabama, which is sometimes called "the Marble City".[2] Sylacauga marble has been called the "world's whitest".[3] Discovered in 1814, it has been mined for over 160 years, and is used for building, sculpture, and industry.[2] TheAlabama Legislature passed Act 755 on September 12, 1969, which made this marble the state'sofficial rock.[4]
Sylacauga marble occurs mainly in Alabama's Talladega County. It runs in a swath 32 miles (51 km) in length, from theCoosa River to just south of the city ofTalladega. The deposit is up to 600 feet (180 m) in depth and is focused on the city ofSylacauga, for which it is named.[4]
The first quarry that was developed to mine the marble was that of physician Edward Gantt, established in 1834.[2] The George Herd Family consolidated several smaller quarries shortly thereafter and sold the first quarried marble from the area in 1838 for use as funerary monuments.[2] These and various other quarry operations expanded during the last decades of the nineteenth century.[2] Italian sculptorGiuseppe Moretti discovered the marble while in Alabama during 1903. He was working on the massiveVulcan statue for theLouisiana Purchase Exposition, commissioned by the Commercial Club ofBirmingham.[2] He established the Moretti-Harrah Marble Company, which exposed other areas of the country to Sylacauga marble.[2]
Major mining operations today include Omya, Sylacauga Marble Mining, and Canadian Polycor Company.[2] Although the pure white color is most widely known in the market, portions of the deposit produce types with bodies or veining in black, pink, gray, and yellow hues.[3][4]
Sylacauga marble is fine-grained and nearly pure calcite, making it extremely similar to whiteCarrara marble.[1] Sylacauga marble was used forGutzon Borglum's bust ofAbraham Lincoln in theUnited States Capitol rotunda. He commented that the stone's fine texture let him portray the expression of kindness on Lincoln's face, something he had never been able to do with other stones.[5]
It has been used extensively for architectural projects. Some examples of interior architectural use of Sylacauga marble include the translucent ceiling of theLincoln Memorial in Washington D.C., theUnited States Supreme Court Building (most of the interior, except courtroom) in Washington D.C., theNational Metropolitan Bank Building in Washington D.C., theArmy and Navy Club Building in Washington D.C., the rotunda of theAlexander Hamilton U.S. Custom House in Manhattan, the Mercedes-Benz showroom in Manhattan, theOld Chicago Main Post Office in Chicago, theKesner Building in Chicago, theUniversity Club in Chicago, the Select Council Chamber ofCity Hall in Philadelphia, the Brown Marx Building in Birmingham, Alabama, the Florence Hotel in Birmingham, and theAlabama Department of Archives and History in Montgomery, Alabama. Use of the marble as an exterior building material includes theDime Savings Bank of New York in Brooklyn, the former Connecticut Savings Bank (now Wells Fargo) in New Haven, Connecticut, theSomerset County Courthouse in Somerville, New Jersey, the main building of theMaryland Institute College of Art in Baltimore,J. Ogden Armour's Mellody Farm in Lake Forest, Illinois, theAtlantic National Bank Building in Jacksonville, Florida, the old United States Post Office in Mobile, Alabama (demolished), theChurch of Jesus Christ of Latter-day Saints' Temple in Washington D.C., and the Chrysler Mausoleum in Sleepy Hollow, New York.[2][5][6][7]
Aside from use as sculptural media and as a building stone, Sylacauga marble is also used in industry as a paint pigment, for pharmaceuticals, as a coating to whiten high-quality paper, and other purposes.[2] It is also used in agriculture as a soil amendment.[2][3]
