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赖来仁,郑巧荣,施妮承.墨绿砷铜石与假孔雀石的中间端员组份矿物──砷假孔雀石的发现[J].广西科学,1995,2(1):30-33. [点击复制]
- Lal Lairen,Zheng Qiaorong,Shi Nicheng.The Discovery of Arsenopseudomalachitean Intermediate Member of Cornwallite Pseudomalachite Isomorphic Series[J].Guangxi Sciences,1995,2(1):30-33. [点击复制]
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| 墨绿砷铜石与假孔雀石的中间端员组份矿物──砷假孔雀石的发现 |
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赖来仁1, 郑巧荣1, 施妮承2
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| (1.中国有色金属工业总公司矿产地质研究院, 桂林 541004;2.中国地质大学, 北京 100083) |
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| 摘要: |
| 砷假孔雀石是墨绿砷铜石与假孔雀石的中间端员组份矿物,首先发现干中国广西德保矿区硫化铜矿床铁帽带,该物的发现使不同族的墨绿砷铜石和假孔雀石联成一类质同象系列。该物的化学成份为CuO 63.32%、As2O5 22.20%、P2O5 8.93%、SO3 0.56%、H2O 5.53%。晶体呈翠绿色粒状,斜方桂状,透明,硬度H=4,实测比重4.59,χ射线衍射特征强线为4.83(59)4.59(91)3.96(45)3.21(95)3.11(100)3.02(93)2.89(60)2.49(61)2.47(97)2.415(96)1.878(44)1.793(44)1.764(45),晶胞参数a0=16.95(5)Å、b0=5.84(1)Å、C0=4.60(2)Å、β=93°.00(7),Z=2。单斜晶系,空间阵P21/a。 |
| 关键词: 砷假孔雀石 砷酸盐矿物 矿物学特征 广西 |
| DOI： |
| 投稿时间：1994-09-07修订日期：1994-11-07 |
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| The Discovery of Arsenopseudomalachitean Intermediate Member of Cornwallite Pseudomalachite Isomorphic Series |
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Lal Lairen1, Zheng Qiaorong1, Shi Nicheng2
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| (1.Research Institute of Geology for Mineral Resources CNNC, Guilin, 541004;2.China University of Geosclences, Beijing, 100083) |
| Abstract: |
Arsenopseudomalachlie was found with other secondary copper arsenate minerals in shuangwall hill, Debao mine, Guangxi China. Its chemical composition was CuO 63.32%, As2O522.20%, P2O5 8.93%, SO3 0.56% (by EPMA), H2O 5.53% (by thermal gravimetric analysis),giving a chemical formular of Cu5.00[(A5O4)1.21.(PO4)0.79]2.00 (SO4)0.04 (OH)3.85. Its crystals were short prism, emeral green in color, Transparent, D(mean)=4.59, D(calc)=4.61, H=4. Average refractive index was 1.885, the stronger lines in X-ray diffraction pattern were:5.51 (37) (110), 4.83(59) (210), 4.59 (91) (001), 3.96 (45) (201), 3.54(88) (111), 3.33 (50) (211),3.21 (95) (401), 3.11 (100) (311), 3.02(93) (401), 2.98(55) (311), 2.89(60) (120), 2.74(64) (220), 2.59 (50) (320), 2.53 (54) (511), 2.49 (61) (601), 2.47 (97) (021), 2.415 (96) (700),2.346 (58) (221), 2.283 (58) (321), 2.223 (44) (321), 2.169 (46) (611), 2.117 (43) (800),1.878(44) (801), 1.794 (44) (031), 1.770 (41) (430), 1.764 (45) (231), 1.756 (43) (721),1.689 (42) (530), 1.637 (45) (431), 1.631 (41) (422), 1.606 (39) (802), 1.581 (38) (920),1.579 (43) (821), 1.549 (38) (812), 1.517 (38) (730), 1.453 (37) (232), 1.441 (40) (1111),1.440(39) (240), 1.433 (37) (830), 1.422 (37) (332), 1.393 (36) (041), 1.386 (34) (141),1.346(35) (341), 1.337(38) (632), 1.331 (35) (441), calculated unit cell parameters:
a0=16.95 (5)Å, b0=5.84 (1)Å, c0=4.60 (2)Å, β=93°.00 (7), and Z=2, monoclinic system,space group:P21/a.
The infrared spectra showed absorption bands at 3427, 3350, 1810 (cm-1) of (OH)-; at 1082, 1027, 992, 611, 525 (cm-1) of (PO4)3-; at 831, 800, 770, 447 (cm-1) of (A5O4)3-,Thermal analysis showed endothermic peak at 560℃ lost 5.53% of weight. |
| Key words: Arsenopseudomalachite Hydrated Arsenate Mineral Mineralogic Characteristies Guangxi |
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