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Perryite (Fe0.03Ni0.97)8 (Si0.79P0.21)3 sample was synthesized using the standard solid-state reaction. The X-ray diffraction results show that its space group is with the lattice parameters (a=b=0.663 8(1) nm, c=3.789 2(2) nm, V=1.446 15(6) nm3). In situ high-pressure X-ray diffraction experiments were carried out up to 21.3 GPa at room temperature. No phase transition was observed in the present pressure range. The unit-cell volumes show a smooth decrease with increasing pressure. The variation of the unit-cell volume with pressure was analyzed by Birch-Murnaghan equations of state. Results of the B-M equations of state yield a unit-cell volume (V0) of 1.441 4(24) nm3 at zero GPa, an isothermal bulk modulus (K0) of 220(7) GPa. Axial compressibility was fitted linearly by Murnaghan equations of state. We obtained Ka=257(9), Kc=165(4). The c-axis was more compressible than the a-axis.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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