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Cinnabar is the more stable form, and is a structure akin to that of HgO: each Hg center has two short Hg−S bonds (each 2.36 Å), and four longer Hg···S contacts (with 3.10, 3.10, 3.30 and 3.30 Å separations). In addition, HgS is found in a black, non-cinnabar polymorph (metacinnabar) that has the zincblende structure. [5]
The Jin dynasty Daoist scholar Ge Hong's c. 320 CE Baopuzi (Master Who Embraces Simplicity) is the earliest surviving source of information about zhi excrescences.. Based upon no longer extant texts and illustrations, Chapter 11 (Xianyao 仙藥, Medicines of Immortality) outlines folklore and knowledge about zhi, and elucidates the wuzhi (五芝, Five Zhi) classification system.
Parupeneus heptacanthus, commonly known as cinnabar goatfish, and sold in UK as "Red Mullet", is a goatfish native to the western Pacific and Indian oceans. [2]
Flower Pennisetum pedicellatum growing in the wild. Desho is a herbaceous perennial grass which has a massive root system that anchors to the soil. [5] It has a high biomass producing capacity and grows upright with the potential of reaching 90 cm to 120 cm in height depending on soil fertility.
The hard, green leaves are set alternately along the branches, more or less directed upwards, oval or heart-shaped with an entire margin near the flowers and bluntly oblong and with up to six bony teeth at the tip lower down, 2–8 cm (0.79–3.15 in) long and 2–4½ cm (0.8–1.8 in) wide, softly hairy at first, becoming hairless.
Cymbopogon citratus, commonly known as West Indian lemon grass or simply lemon grass, [3] is a tropical plant native to South Asia and Maritime Southeast Asia and introduced to many tropical regions. [4] Cymbopogon citratus is often sold in stem form. While it can be grown in warmer temperate regions, such as the UK, it is not hardy to frost.
It has creeping rhizomes which enable it to grow rapidly across grassland.It has flat, hairy leaves with upright flower spikes. The stems grow to 40–150 centimetres (16–59 in) tall; the leaves are linear, 15–40 centimetres (5.9–15.7 in) long and 3–10 millimetres (0.12–0.39 in) broad at the base of the plant, with leaves higher on the stems 2–8.5 millimetres (0.079–0.335 in) broad.
It is the high temperature form and trimorphous with cinnabar (trigonal structure) and the higher temperature hypercinnabar (hexagonal structure). It occurs with cinnabar in mercury deposits and is associated with native mercury, wurtzite, stibnite, marcasite, realgar, calcite, barite, chalcedony and hydrocarbons. [2]