List of raw materials that should be analyzed by XRD:

• Quartz agglomerates
• Samples in which it is indicated that there are other polymorphs of crystalline silica other than quartz
• Amorphous silica (glass, diatomaceous earth, etc.)
• Sepiolite, bentonite, and attapulgite
• Phonolite, rhyolite, trachyte, ignimbrite, and lapilli (picon)
• Rutile, zircon
• Tungstates and molybdates

The analysis includes the determination of alpha quartz and respirable matter

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