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Generic Materials Search: gypsum mined source

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3 items found.

View the OMRI Generic Materials List Glossary in PDF format here.
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Calcium Sulfate
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
See also GYPSUM – MINED SOURCE.
205.203(d)(2) A mined substance of low solubility.
Calcium – nonsynthetic sources
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
Allowed unless restricted or prohibited at 205.602. See also CALCIUM CARBONATE, GYPSUM – MINED SOURCE, and CALCIUM CHLORIDE.
205.203(d)(2),(3) & 205.105
Gypsum – mined source
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
Calcium sulfate; only mined forms are acceptable. See also GYPSUM BY-PRODUCTS and MINED MINERALS – UNPROCESSED.
205.203(d)(2) A mined substance of low solubility.