Indiana Limestone is a distinctive sedimentary rock known for its buff, beige to light gray coloration, and it is primarily composed of calcium carbonate. This hard limestone is quarried in the region of Bloomington, Monroe County, located in southern Indiana, United States.

Key Characteristics:

Color Palette: Indiana Limestone exhibits a versatile color palette ranging from buff and beige to light gray. The subtle variations in color contribute to its aesthetic appeal.

Sedimentary Nature: As a sedimentary rock, Indiana Limestone is formed through the accumulation and compaction of organic remains, predominantly marine animal fossils and calcite-rich materials.

Calcium Carbonate Composition: The rock's principal mineral is calcium carbonate, giving it durability and a characteristic crystalline structure.

Hardness: Known for its hardness and durability, Indiana Limestone has been a preferred choice for various construction and architectural applications.

Quarry Location: The limestone is specifically quarried in Bloomington, Monroe County, southern Indiana, which has been a renowned source for high-quality limestone for many decades.

Common Applications:

Architectural Elements: Indiana Limestone has been widely used in architectural masterpieces, including buildings, monuments, and facades. Its durability and aesthetic appeal make it a preferred choice for intricate detailing.

Construction: Due to its durability and ability to withstand weathering, Indiana Limestone is commonly used in construction for various purposes, such as cladding, paving, and landscaping.

Carving and Sculpting: The workability of Indiana Limestone has made it a favored material for carving and sculpting, showcasing intricate designs and details.

Historical Significance: Many historically significant structures, including landmarks and government buildings, feature Indiana Limestone, contributing to its timeless legacy.

Indiana Limestone's combination of durability, aesthetic versatility, and the ability to hold intricate details has made it a cornerstone in the construction and architectural industries, leaving an enduring mark on both historical and contemporary designs.

Indiana Limestone chemical analysis

The average analysis as developed by carefully prepared
composite samples is given below.
BUFF -- GRAY
Carbonate of Lime 97.39 -- 97.07
Carbonate of Magnesia 1.20-- 1.20
Silica .69 --.80
Alumina .44 --.68
Iron Oxide .18 --.12
Water and Loss .10 --.13
100.00 --100.00

PROPERTY VALUE TEST PROCEDURE
Ultimate compressive strength 4,000 psi minimum ASTM C170
dry specimens (see note a)
Modulus of rupture 700 psi minimum ASTM C99
dry specimens (see note a)
Absorption 71/2% maximum ASTM C97