fluoresence is not a factor. I had this same question and i got fluorescence as a correct answer
A mineral.
No, a rock with visible layers and no mineral crystals likely did not form from lava hardening on Earth's surface. Such layered rocks are typically sedimentary, formed from the accumulation and compaction of sediments over time. In contrast, igneous rocks formed from lava cooling often contain visible mineral crystals, as the cooling process allows crystals to grow.
Minerals are formed by the arrangement of atoms in a crystalline structure and are considered inorganic substances. They are naturally occurring solids with a definite chemical composition and often have a characteristic crystal form. Minerals are essential building blocks of rocks and are found in abundance in the Earth's crust.
Metamorphic rocks that consist of only one mineral and have large interlocking crystals often have a coarse-grained texture. This means that the individual mineral grains are easily visible to the naked eye. Examples of such rocks include quartzite (formed from quartz) and marble (formed from calcite).
Borax crystals are specifically composed of the mineral borax, while other natural crystals can be formed from a wide variety of minerals such as quartz, calcite, or fluorite. Borax crystals have distinct properties and chemical composition that distinguish them from other natural crystals.
fluoresence is not a factor. I had this same question and i got fluorescence as a correct answer
A mineral.
The main factor is time spent in cooling and solidifying. More time means larger crystals.
evaporation
Igneous rocks that have mineral crystals easily seen with the unaided eye formed from slow cooling and crystallization of magma deep underground or at the Earth's surface. The slower the cooling process, the larger the mineral crystals can grow, resulting in rocks like granite and diorite with visible crystals.
The crystals will always form according the geometric parameters of the mineral crystal system to which they belong, but the size of the crystals varies depending on the environment in which they form.
No, a rock with visible layers and no mineral crystals likely did not form from lava hardening on Earth's surface. Such layered rocks are typically sedimentary, formed from the accumulation and compaction of sediments over time. In contrast, igneous rocks formed from lava cooling often contain visible mineral crystals, as the cooling process allows crystals to grow.
evaporation
Yes. When magma cools and solidifies, mineral crystals are formed.
The small crystals likely formed due to rapid cooling of the molten rock or solution from which the mineral precipitated. This rapid cooling did not allow enough time for the crystals to grow larger, resulting in the formation of small crystals.
Yes. When magma cools and solidifies, mineral crystals are formed.
Yes. When magma cools and solidifies, mineral crystals are formed.