Write me a short paragraph about the difference of anatase and rutile crystal configurations
Anatase and rutile are two crystalline forms of titanium dioxide, a white, opaque mineral used in many industrial and consumer applications. The main difference between anatase and rutile is their crystal structure. Anatase has a tetragonal structure, meaning it has four sides and four angles, while rutile has a more compact, rhombohedral structure with six sides and angles. Anatase is also typically less dense and more reactive than rutile, and it often has a higher surface area, which makes it useful in photocatalytic applications. Rutile, on the other hand, is more stable and has a higher refractive index, which makes it valuable in the production of high-index glass, optical coatings, and other optical applications.
Can you give me more properties of these forms?
What is their respective index of refraction?
How do they rank on the Mohs hardness scale?
What colors do they come in (and do you know what causes potentially different colors)?
What are their breaking characteristics?
And what can you tell me about their cleavage quality and the way they might fracture?