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http://www.qqyunshi.com/forum.php?mod=viewthread&tid=65910&page=1
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NWA 7325(可能的配对)–Ungrouped Achondrite

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发表于 2018-9-2 19:10:48 | 显示全部楼层 |阅读模式
[tr=none transparent scroll repeat 0% 0%]这些惊人的照片没有被修改过的所有除了作物。[tr=rgb(194,217,233)]没有色彩的操纵和代表NWA七三二五下演播室灯光看到真实的颜色(5500k)。
[tr=none transparent scroll repeat 0% 0%]这石头是被表示为一个可能的配对NWA 7325。[tr=none transparent scroll repeat 0% 0%]根据要求,科学分析可以验证配对。
[tr=none transparent scroll repeat 0% 0%]这石头的重量27.83g并出售。[tr]严重的提供可以PM我或给我发电子邮件。[tr]机构销售同样受欢迎。[tr]石头在我手里,准备船。
[tr=none transparent scroll repeat 0% 0%]从MetBull的描述:
[tr=none transparent scroll repeat 0% 0%]物理特性[tr=none transparent scroll repeat 0% 0%]:35个一组很新鲜,暗绿色的石头(共345克),其中有部分残黄色的熔壳。[tr=none transparent scroll repeat 0% 0%]这种材料是显著为特征的“冷冰冰”的光泽的斜长石和单斜辉石的亮绿色。
[tr=none transparent scroll repeat 0% 0%]<strong>岩</strong>:(A. Irving和S. Kuehner, <i>UWS</i>):标本有一个整体的火成(可能累积)的纹理。[tr=none transparent scroll repeat 0% 0%]这是一个中等粒度的骨料铝含铬透辉石、钙斜长石和叶状(可能吸收)颗粒镁橄榄石,副轴承硫化铁(可能是铁),非常稀疏的ferrochromite,铁纹石和镍纹石、珍稀eskolaite(Cr Fe硫化物有关)。[tr=none transparent scroll repeat 0% 0%]在薄片的导管置入血管的斜长石是双折射,但折射的水平低于正常的和可变的判罚尺度上(暗示的成分和/或结构的微区的存在);还有稀疏的囊泡(建议至少部分熔融)。[tr=none transparent scroll repeat 0% 0%]辉石具有至少两组聚片双晶,类似于那些由适度的高冲击。
[tr]地球化学[tr]:Clinopyroxene(FS[tr] 1.1-2.6[tr]窝[tr=none transparent scroll repeat 0% 0%]45.1-44.5[tr]、FeO和MnO = 12-21,Al[tr]二[tr]o[tr]三[tr] = 2.6-2.8 %,Cr[tr]二[tr]o[tr]三[tr] = 1重量%),斜长石(一[tr=none transparent scroll repeat 0% 0%]88.1-89.2[tr]或[tr]零[tr=none transparent scroll repeat 0% 0%])、橄榄石(FA[tr]2.7-2.8[tr=none transparent scroll repeat 0% 0%]、FeO和MnO = 30-36,曹= 0.27-0.32 %,Cr[tr]二[tr]o[tr]三[tr=none transparent scroll repeat 0% 0%] =周围重量%)。[tr]体成分(G. Chen, [tr]UAB[tr=none transparent scroll repeat 0% 0%]):代表散线分析切割粉尘ICP-MS给:(PPM)La 0.15%,CE 0和0,0,SM,欧盟为0,GD,HF为0.27,日。[tr]氧同位素(K. Ziegler, [tr]UNM[tr=none transparent scroll repeat 0% 0%]):酸洗的样本给激光氟化分析,分别δ[tr=none transparent scroll repeat 0% 0%]十七[tr=none transparent scroll repeat 0% 0%]O = 3.214,3.670,3.249;δ[tr]十八[tr]O = 7.566,8.204,7.957;Δ[tr]十七[tr=none transparent scroll repeat 0% 0%]O = -0.781,-0.662,-0.952每MIL [ 0.528 ] TFL坡。
[tr]<strong>分类</strong>:Achondrite(组合)。[tr=none transparent scroll repeat 0% 0%]高镁铁质硅酸盐和高钙斜长石铬矿物组合之间的无球粒陨石是唯一的,而样本是大多数微量元素高度亏损。
 楼主| 发表于 2018-9-3 07:34:25 来自手机 | 显示全部楼层
These stunning photos have not been retouched at all except to crop them. There is no color manipulation and represent the true colors of NWA 7325 as seen under studio lighting (5500K). This stone is being represented as a possible pairing to NWA 7325. Upon request, scientific analysis can be conducted to confirm the pairing. This stone weighs 27.83g and is for sale. Serious offers can PM me or email me. Institutional sales are welcome as well. The stone is in my possession and ready to ship. Description from the MetBull: Physical characteristics: A group of 35 very fresh, dark greenish stones (total 345 g), several of which have partial remnant chartreuse-colored fusion crust. This material is notable for the characteristic “frosty” luster of the plagioclase and bright green color of the clinopyroxene. Petrography: (A. Irving and S. Kuehner, UWS): The studied specimen has an overall plutonic igneous (possibly cumulate) texture. It is a medium-grained aggregate of Al-Cr-bearing diopside, calcic plagioclase and lobate (possibly resorbed) grains of forsterite, with accessory Cr-bearing iron sulfide (probably troilite), very sparse ferrochromite, kamacite and taenite, and rare eskolaite (associated with Cr-Fe sulfide). In thin section the untwinned plagioclase is birefringent, but the levels of birefringence are less than normal and variable on a fine scale (suggesting the existence of compositional and/or structural microdomains); there also are sparse vesicles (suggesting at least partial melting). The pyroxene exhibits at least two sets of polysynthetic twin lamellae, which resemble those produced by moderately high shock. Geochemistry: Clinopyroxene (Fs1.1-2.6 Wo45.1-44.5, FeO/MnO = 12-21, Al2O3 = 2.6-2.8 wt.%, Cr2O3 = 1.0 wt.%), plagioclase (An88.1-89.2Or0.0), olivine (Fa2.7-2.8, FeO/MnO = 30-36, CaO = 0.27-0.32 wt.%, Cr2O3 = 0.32-0.35 wt.%). Bulk composition (G. Chen, UAb): analyses of representative bulk wire-saw cutting dust by ICP-MS gave: (in ppm) La 0.15, Ce 0.34, Nd 0.16, Sm 0.05, Eu 0.58, Gd 0.05, Hf 0.44, Th 0.27. Oxygen isotopes (K. Ziegler, UNM): laser fluorination analyses of acid-washed subsamples gave, respectively δ17O = 3.214, 3.670, 3.249; δ18O = 7.566, 8.204, 7.957; Δ17O = -0.781, -0.662, -0.952 per mil [for TFL slope of 0.528]. Classification: Achondrite (ungrouped). The combination of highly magnesian mafic silicates and highly calcic plagioclase with chromium-bearing sulfides is unique among achondrites, and the specimen is highly depleted in most trace elements.
发表于 2018-9-2 20:07:19 | 显示全部楼层
看不懂啊
发表于 2018-9-2 23:12:09 | 显示全部楼层
7325陨石是三色状态黄色是熔壳红色应该为内部基质、。7325陨石给当今鉴定出了一个大难题。
发表于 2018-9-23 18:50:44 | 显示全部楼层

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