Colouration mechanism of chrysoprase: insights from colourimetry, spectroscopy and mineralogy
Year: 2025
Type: article
Abstract: , attributed to Ni-OH vibrational modes, exhibits partial splitting unique to chrysoprase, reflecting a distorted, less hydrated Ni environment compared with pimelite. Together, these observations demonstrate that the green colour of chrysoprase originates from the poorly crystalline Ni-bearing phyllosilicate intermediate between hydrous, disordered pimelite and well-crystallised, anhydrous willemseite. This work clarifies the mineralogical and spectroscopic basis of chrysoprase's colouration, providing a robust explanation for its distinctive colour.
Source: RSC Advances
DOI: 10.1039/d5ra05339k
Authors: Yuansheng Jiang, Qingfeng Guo, Yu Wang, Vien Cheung, Stephen Westland, Jiayang Han, Xiang Zong, Ying Guo, Dan Wang
Language: English
Subfield: Geochemistry and Petrology
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,042
Award: G4264165195
OpenAlex ID: W4414533000