UNSPSC 11101531: Serpentine

Any of a group of hydrous magnesium-rich silicate minerals. The composition of these common rock-forming minerals approximates Mg3Si2O5 OH 4. Serpentine is usually grayish, white, or green but may be yellow -chrysotile- or green-blue -antigorite. The green color is due to iron replacing magnesium.

UNSPSC 11101531 Serpentine is a Commodity code that in state and local procurement covers natural stone materials and related mineral products. However, the recent opportunities tagged under this code show limited relevance to the nominal scope: two of the three posted solicitations concern irrigation system components and metals procurement rather than serpentine stone, suggesting either tagging inconsistencies or a narrow application of the code in practice. State and local buyers posting under this code include cities (DeBary, Florida; Fort Worth, Texas), counties (Franklin, Grant, Grays Harbor, Chelan, and Yakima in Washington), and cooperative purchasing vehicles such as Sourcewell on behalf of multiple governmental entities. The actual work being solicited spans irrigation infrastructure improvement, structural metals supply on an as-needed basis, and law enforcement equipment procurement through cooperative agreements.

Geographic activity appears concentrated in the South (Florida) and Southwest (Texas) with a significant cooperative procurement spanning the Pacific Northwest and broader multi-state/multi-jurisdiction participation through Sourcewell. Representative recent opportunities include the City of DeBary's RFP for Rob Sullivan Park irrigation improvements (Bid 0315, mandatory pre-bid March 25, 2015, due April 10, 2015, $90,000 estimated cost), the City of Fort Worth's RFP for aluminum, iron, rebar, and steel supply on an as-needed basis (RFP 26-0222, due July 23, 2026, with a 30 percent small business participation goal and best-value evaluation across cost, small business participation, vendor experience, delivery capability, and local location), and Sourcewell's RFP for Law Enforcement Equipment (RFP 061626, due June 16, 2026, open to thousands of governmental entities nationwide and in Canada through cooperative purchasing framework). The Fort Worth metals solicitation and Sourcewell law enforcement procurement show active recent posting, though the code's actual market alignment with serpentine stone appears weak based on these examples.