has part
has characteristic
derives from
particle of sand
rock
sand
SWEETRealm:Sand
LTER:484
Do not oversimplify the particulate environmental material subclasses with design patterns or similar. The materials have properties that their components do not - write full definitions including these where possible.
EcoLexicon:sand
https://en.wikipedia.org/wiki/Sand
Particulate environmental material which is composed primarily of particles of sand with only minor proportions of other substances.
This definition is intentionally ambiguous to support the multiple thresholds set by different authorities. Some authorities consider as sands soil material that contains 85% or more sand; the percentage of silt plus 1.5 times the percentage of clay does not exceed 15. coarse sand (sable grossier) 25% or more very coarse and coarse sand, and less than 50% any other one grade of sand.
particulate environmental material
organism
texture
porous
granular
shell