All sands are mineral particles, as are clay and silt. Think of them as rock dust, disintegrated by weathering: warming, cooling, freezing and thawing, wetting and drying, wind and water erosion, glacial ice movement, and even root penetration.
Earth is a very privileged planet. Because we have a thin crust with a shifting plate, minerals from below the surface are brought up to the top where the elements can break them down into life sustaining soil.
There are five texture types of sand - very coarse, coarse, medium, fine, and very fine. Texture all depends on the extent of weathering and the type of parent rock.
When you mix rock dust with air, water, and organic matter you have soil. In a typical soil 45% is mineral component, 5% is organic matter, 25% is air, and 25% is water.
The turf managers job is to be the conservator of all these components.