Moganite

[6] In 1994 the International Mineralogical Association decided to disapprove it as a valid mineral, since it was considered indistinguishable from quartz.

[4] This mineral has been mainly found in dry locales such as Gran Canaria and Lake Magadi.

The main infrared spectroscopy (IR) differences between moganite and α-quartz occur in the wavenumber region below 650 cm−1.

[10] Synchrotron X-ray powder diffraction data for moganite from 100 to 1,354 K (−173 to 1,081 °C) has revealed a reversible phase transition from space group I2/a to Imab at approximately 570 K (297 °C).

[11] The in-situ Fourier transform infrared spectroscopy shows that while the thermal responses of H2O and OH in moganite display similarities to agate, the spectra are not completely identical.