No. As it is synthetic it is man-made. A mineral must be naturally occurring and have a crystalline structure (among other requirements). Synthetic opal does not meet these criteria.
TEXTURE
And their texture, which can be aphanitic, phaneritic, glassy, or porphyritic. mineral composition and crystal texture
How are basalt and granite diffrerent in their origin texture and mineral composition How are the similar
Mineraloids are a mineral like substance that don't exhibit crystallinity. 5 Examples: mercury pearl obsidian anthracite jet
Neither. Opal is a mineraloid, as it does not have a sufficiently organized structure to be considered a mineral.
Opal
Opal ia a hydrated silica mineral.
Opal is an amorphous form of silica related to quartz, a mineraloid form, not a mineral. A mineraloid is a mineral-like substance that does not demonstrate crystallinity.Now you get it?
Opal is a mineral.
Opal and amber are not minerals.
Opal and amber are not minerals.
The fracture of an opal can be hard or smooth , An opal can have as many fractures as any other mineral can . Sometimes opal can be smooth , sometimes they can be hard . The fracture of an opal is hard and smooth .
Opal, (although it's not a true mineral).
Opal is not a mineral, but a silica gel.
Orthoclase
No. As it is synthetic it is man-made. A mineral must be naturally occurring and have a crystalline structure (among other requirements). Synthetic opal does not meet these criteria.