1. a type of sandstone that contains the green mineral glauconite, giving it a greenish color
Usage: geological
2. a fertilizer made from crushed glauconitic rock, used to improve soil
Usage: agricultural

Examples

• The cliffs were composed of layers of greensand from the Cretaceous period.
• Geologists identified the greensand formation by its distinctive green color.
• The farmer applied greensand to his vegetable garden to add potassium.
• Greensand is a popular organic fertilizer among gardeners.
• The quarry extracted greensand for use in construction and agriculture.
• Marine fossils are commonly found in greensand deposits.