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Cobalt-bearing adamite from Cap Garonne, Mine du Pradet, France – structural relationship to olivenite and magnetic behavior
Zeitschrift für Kristallographie - Crystalline Materials ( IF 1.2 ) Pub Date : 2023-10-07 , DOI: 10.1515/zkri-2023-0037 Christian Paulsen 1 , Maximilian Kai Reimann 1 , Michael Holtkamp 1 , Valérie Galéa-Clolus 2 , Uwe Karst 1 , Rainer Pöttgen 1
Zeitschrift für Kristallographie - Crystalline Materials ( IF 1.2 ) Pub Date : 2023-10-07 , DOI: 10.1515/zkri-2023-0037 Christian Paulsen 1 , Maximilian Kai Reimann 1 , Michael Holtkamp 1 , Valérie Galéa-Clolus 2 , Uwe Karst 1 , Rainer Pöttgen 1
Affiliation
The crystal structure of cobalt-bearing adamite (Zn, Co)2 AsO4 OH (so-called cobalton adamite) from Mine du Pradet, Cap Garonne, France has been refined from single crystal X-ray diffraction data: Pnnm , a = 831.39(4), b = 852.67(6), c = 605.84(6) pm, wR = 0.0568, 901 F 2 values, 48 variables. The composition of the single crystal and the bulk sample with EDX and ICP-OES was determined as Zn1.94 Co0.06 (AsO4 )OH and (Co0.085 Ni0.037 Cu0.270 Zn1.608 )AsO4 OH. The Co2+ , Ni2+ and Cu2+ incorporation in the bulk sample leads to Curie paramagnetism with an experimental moment of 2.85 µB /M 2+ cation and explains the pink color along with the greenish edges. The Raman spectrum shows the characteristic vibrations of the AsO4 tetrahedra and the M O5 pyramids as well as the O–H stretching mode. The adamite structure is closely related with the olivenite type (space group P 21 /n 11). This structural relationship is discussed on the basis of a group–subgroup scheme (Bärnighausen formalism).
中文翻译:
产自法国 Pradet 矿区 Cap Garonne 的含钴金刚石 – 与橄榄石的结构关系和磁性行为
含钴金刚砂(Zn、Co)的晶体结构2 亚砷酸4 产自法国加龙角 Mine du Pradet 的 OH(所谓的钴金刚砂)已根据单晶 X 射线衍射数据进行精炼:PNN ,A = 831.39(4),乙 = 852.67(6),C = 605.84(6) 下午,w右 = 0.0568, 901F 2 值,48 个变量。用 EDX 和 ICP-OES 测定单晶和块状样品的成分为 Zn1.94 钴0.06 (AsO4 )OH 和 (Co0.085 你0.037 铜0.270 锌1.608 )AsO4 哦。公司2+ , 你2+ 和铜2+ 掺入大量样品中会产生居里顺磁性,实验矩为 2.85 µ乙 /中号 2+ 阳离子并解释了粉红色和绿色边缘。拉曼光谱显示了 AsO 的特征振动4 四面体和中号 氧5 金字塔以及 O-H 拉伸模式。亚当石结构与橄榄石类型(空间群磷 21 /n 11)。这种结构关系是在群-子群方案(Bärnighausen 形式主义)的基础上讨论的。
更新日期:2023-10-07
中文翻译:
产自法国 Pradet 矿区 Cap Garonne 的含钴金刚石 – 与橄榄石的结构关系和磁性行为
含钴金刚砂(Zn、Co)的晶体结构