论文部分内容阅读
叶绿矾是具有岛状基本结构的硫酸盐类矿物,对产于新疆东天山北部红山矿区硫化物矿床氧化带中的叶绿矾进行单晶衍射实验发现,该叶绿矾具有明显的超结构弱衍射点,利用包括弱衍射点在内的全部可观察点求得的超晶胞参数为:a=1.49441(7)nm,b=1.83429(9)nm,c=1.14507(6)nm,α=93.2390(10)°,β=112.0330(10)°,γ=98.2800(10)°,V=2.8583(2)nm3,空间群为P1,Z=3。去掉弱衍射点后利用强衍射点得到的最小亚晶胞参数是a=0.737121(4)nm,b=1.83079(11)nm,c=0.73106(4)nm,α=93.9250(10)°,β=102.7252(10)°,γ=98.9463(10)°,V=0.947321(2)nm3,空间群为P1,Z=1。超晶胞与亚晶胞相比体积增加了2倍,其b轴的方向和大小基本不变,a和c轴产生了差异。该叶绿矾的晶体化学式为Fe0.656Fe4(SO4)6(OH)2·19.4H2O,属高铁叶绿矾。结构中,部分Fe-O八面体和SO4四面体联合形成的复合链,并沿[102]方向分布,形成一种稳定的骨干结构;部分孤立Fe-O八面体,位于链间,阳离子相当于晶体化学式中A位置的离子,通常有缺失。链和孤立八面体的分布均平行(010)面网,分别构成链层和八面体层,并按2∶1的比例堆垛,结构单元之间全部由氢键相连。超结构产生的原因是电价补偿机制造成的孔道中Fe的位置分离和占位差异造成。
Phyllite is a sulphate mineral with island-like basic structure. Single-crystal diffraction of phyllite produced in the oxidation zone of sulfide deposits in the Hongshan mining area in the northern part of East Tianshan Mountains of Xinjiang shows that the phyllosite has obvious ultra- The results show that the supercell parameters obtained from all observable points including the weak diffraction point are a = 1.49441 (7) nm, b = 1.83429 (9) nm and c = 1.14507 (6) nm, α = 93.2390 (10) °, β = 112.0330 (10) °, γ = 98.2800 (10) °, V = 2.8583 (2) nm3 and the space group P1 and Z = 3. The minimum subunit parameters obtained from the strong diffraction point after removing the weak diffraction point are a = 0.737121 (4) nm, b = 1.83079 (11) nm, c = 0.73106 (4) nm and α = 93.9250 = 102.7252 (10) °, γ = 98.9463 (10) °, V = 0.947321 (2) nm3, space group P1, Z = 1. Supercell cells and subglue cells compared to an increase of 2 times the volume, the direction and size of its b-axis basically unchanged, a and c-axis differences. The chlorite of the crystal chemical formula is Fe0.656Fe4 (SO4) 6 (OH) 2 · 19.4H2O, is a high-iron leaf chlorite. Structure, part of the Fe-O octahedron and SO4 tetrahedron combined to form a composite chain, and along the [102] direction distribution, forming a stable backbone structure; part of isolated Fe-O octahedron, located in the chain, the cation is equivalent to Crystalline chemical formula in the A position of the ion, usually missing. The chains and isolated octahedrons are all parallel to the (010) face net, forming the chain and octahedral layers, respectively, and stacked in a ratio of 2: 1. All the structural elements are connected by hydrogen bonds. The reason for the super structure is caused by the separation of the Fe in the pores caused by the electricity price compensation mechanism and the difference of the placeholders.