Definition of botryoidal in English:
(Chiefly of minerals) having a shape reminiscent of a cluster of grapes.
- Accessory minerals include earthy aggregates of clay minerals and botryoidal or stalactitic manganese oxides.
- This is a late-formed mineral that occurs as thin botryoidal crusts with little visible crystal structure.
- It forms spherical clusters of tightly packed radiating crystals and botryoidal crusts.
Definition of botryoidal in:
- US English dictionary
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