General terms:
* Sand: This is the most common term for small, loose particles of rock and mineral.
* Grit: This term often refers to sand or other small, hard particles, especially those used for abrasive purposes.
* Gravel: This term is typically used for larger particles than sand, but some gravel can contain smaller grains.
More specific terms:
* Mineral grains: This refers to individual crystals or fragments of minerals, which can be very small.
* Sand grains: This specifically refers to individual particles of sand, which are typically made up of quartz or other common minerals.
Other possibilities:
* Dust: This refers to extremely fine particles of rock, soil, and other materials that can be suspended in the air.
* Powder: This term is usually used for very fine, dry, and loose particles of any substance, including rock.
To provide a more accurate answer, I need more information about the context and characteristics of the tiny rocks. For example, are they found on a beach? In a riverbed? Are they sharp or smooth? What is their color?
