Geochemical Characteristics and Color Formation Mechanisms of “Panlong Jade” from Jilin Province

doi:10.19657/j.geoscience.1000-8527.2025.005

Abstract

Abstract:

“Panlong Jade”, a type of quartzite jade, is derived from the mineralized rocks surrounding the Xiaohongshilazi lead-zinc deposit in Panshi City, Jilin Province. Mostly yellow-green, it is primarily composed of quartz and sericite minerals. Based on field investigations, this study systematically examines the gemological, spectroscopic and geochemical characteristics of “Panlong Jade” using conventional gemological testing, X-ray powder diffraction, infrared spectroscopy, laser Raman spectroscopy, whole rock geochemical principal component analysis, electron probe, ultraviolet-visible reflection spectroscopy, whole-rock rare earth and trace element analysis and zircon U-Pb dating, while exploring the color formation mechanism, age and ore genesis of “Panlong Jade”. The results indicate that the protolith of “Panlong Jade” is mainly rhyolite tuff, and its color and particle size change due to alteration processes such as silicification and sericitization to meet jade standards. The green coloration is due to the presence of Fe²⁺, which is isomorphic substituted in sericite, giving it a green hue. There is a positive correlation between the sericite content and the green color of “Panlong Jade”. On the other hand, the presence of Fe³⁺ imparts yellow (goethite) and red (hematite) hues. “Panlong Jade” formed in a medium to low-temperature metamorphic environment. Zircon U-Pb dating results (228.1±0.7) Ma suggest that the formation of “Panlong Jade” is closely related to acidic magmatic intrusion activity during the Late Triassic period of the Mesozoic era. The mineralization process of “Panlong Jade” can be divided into three main stages: silicification, sericitization, and carbonation.

Key words: “Panlong Jade”, quartzite jade, spectroscopic analysis, rock geochemistry, zircon U-Pb dating

CLC Number:

YANG Yuting, BAI Feng, WEN Yuhang, ZHANG Qidong, ZHANG Daoyuan, WANG Wen. Geochemical Characteristics and Color Formation Mechanisms of “Panlong Jade” from Jilin Province[J]. Geoscience, 2025, 39(01): 167-182.

Figures/Tables 22

Fig. 1 Regional tectonic framework of Northeast China (a) (modified after reference[8]) and geological map of the “PanlongJade” deposit (b) (modified after reference[3])

Fig. 2 “Panlong Jade” orebody

Fig.3 Photos of “Panlong Jade” hand specimens

Fig.4 Features of “Panlong Jade” under polarization microscope

Fig. 5 XRD diffraction pattern of “Panlong Jade” samples

Fig. 6 Infrared spectral reflectance of “Panlong Jade” samples

Table 1 Partial infrared reflectance spectral characteristic peaks of the green series “Panlong Jade”(cm-1)

编号	$ν S i (A l I V) - O$ 伸缩振动(Ms)	Si(Al)-O 伸缩振动(Ab)	Si-Si伸缩振动(Ab)	Si-Al(Si) 伸缩振动(Ab)		O-Si(Al)-O 弯曲振动(Ab)		Si-O-Si弯曲振动(Ab)
L01	1039	1010	761	742	721	649	594	420
L02	1041	-	761	742	723	648	592	430
L03	1041	-	-	740	721	656	590	422
L04	1035	-	761	742	719	648	-	418
L05	1041	-	-	-	721	651	595	-
L06	1041	1008	761	742	721	653	594	420
L07	1045	-	-	-	721	649	590	418
L08	1039	-	-	-	-	-	-	-
L09	1041	-	760	742	721	649	590	420

Table 1 Partial infrared reflectance spectral characteristic peaks of the green series “Panlong Jade”(cm-1)

编号	$ν S i (A l I V) - O$ 伸缩振动(Ms)	Si(Al)-O 伸缩振动(Ab)	Si-Si伸缩振动(Ab)	Si-Al(Si) 伸缩振动(Ab)		O-Si(Al)-O 弯曲振动(Ab)		Si-O-Si弯曲振动(Ab)
L01	1039	1010	761	742	721	649	594	420
L02	1041	-	761	742	723	648	592	430
L03	1041	-	-	740	721	656	590	422
L04	1035	-	761	742	719	648	-	418
L05	1041	-	-	-	721	651	595	-
L06	1041	1008	761	742	721	653	594	420
L07	1045	-	-	-	721	649	590	418
L08	1039	-	-	-	-	-	-	-
L09	1041	-	760	742	721	649	590	420

Fig. 7 Raman spectra of “Panlong Jade” samples

Fig. 8 Ultraviolet-visible reflection spectrum and its first derivative spectrum of “Panlong Jade” samples

Table 2 Chemical composition of sericite from “Panlong Jade” samples (%)

编号	SiO₂	TiO₂	Al₂O₃	^TFeO	MnO	MgO	CaO	NaO	K₂O	Cr₂O₃	Total	Si
LH07-1	50.17	0.09	34.15	1.19	0.04	0.43	0.14	0.30	9.90	0.05	96.46	3.26
LH07-2	49.01	0.11	33.68	1.14	0.06	0.38	0.12	0.31	9.97	0.42	95.20	3.25
LH07-2	49.40	0.11	34.58	1.32	-	0.36	0.02	0.37	10.15	0.04	96.35	3.22
LH08-2	50.16	0.03	34.21	1.28	0.06	0.43	0.06	0.39	9.69	-	96.31	3.26
LH08-3	50.49	0.11	33.84	1.15	0.02	0.44	0.03	0.29	9.48	0.07	95.92	3.29
L10-1	49.38	0.02	34.57	0.76	-	0.53	0.09	0.29	10.30	0.32	96.26	3.23
L10-2	49.78	0.09	34.59	1.34	0.04	0.31	0.01	0.36	9.96	-	96.48	3.24
L11-1	50.05	0.08	34.10	1.18	-	0.40	0.07	0.25	9.43	0.38	95.94	3.27
L11-2	49.25	0.19	34.69	1.10	0.07	0.50	0.15	0.31	9.99	0.04	96.29	3.21
L11-3	48.16	0.27	34.14	1.19	0.10	0.69	0.11	0.29	10.58	0.09	95.62	3.18
编号	^ⅣAl	^ⅥAl	Al^T	Ti	Fe	Mn	Mg	Ca	Na	K	Total	OH^-
LH07-1	0.74	1.88	2.62	-	0.06	-	0.04	0.01	0.04	0.82	6.86	2.00
LH07-2	0.75	1.87	2.63	0.01	0.06	-	0.04	0.01	0.04	0.84	6.88	2.00
LH07-2	0.78	1.88	2.66	0.01	0.07	-	0.04	-	0.05	0.84	6.89	2.00
LH08-2	0.74	1.88	2.62	-	0.07	-	0.04	-	0.05	0.80	6.85	2.00
LH08-3	0.71	1.88	2.60	0.01	0.06	-	0.04	-	0.04	0.79	6.82	2.00
L10-1	0.77	1.89	2.66	-	0.04	-	0.05	0.01	0.04	0.86	6.89	2.00
L10-2	0.76	1.89	2.65	-	0.07	-	0.03	-	0.05	0.83	6.87	2.00
L11-1	0.73	1.89	2.62	-	0.06	-	0.04	-	0.03	0.79	6.82	2.00
L11-2	0.79	1.88	2.67	0.01	0.06	-	0.05	0.01	0.04	0.83	6.88	2.00
L11-3	0.82	1.85	2.66	0.01	0.07	0.01	0.07	0.01	0.04	0.89	6.94	2.00

Fig.9 (Fe+Mg+Mn) vs. (Total Al) diagram for sericite from “Panlong Jade” samples[22]

Table 3 Results of main elements in different colors of “Panlong Jade” (%)

样品	SiO₂	TiO₂	Al₂O₃	Fe₂O₃	MnO	MgO	CaO	Na₂O	K₂O	P₂O₅	FeO	LOI	总量
H02	76.18	0.07	12.17	0.11	0.04	0.28	1.52	0.19	3.23	0.01	0.43	4.22	98.45
H04	81.00	0.07	10.94	0.14	0.03	0.21	0.09	0.13	3.01	0.02	0.43	2.22	98.28
LH03	78.02	0.08	12.38	0.16	0.03	0.26	0.50	0.13	3.47	0.01	0.50	2.99	98.52
LH04	75.48	0.08	12.14	0.13	0.10	0.19	1.84	0.13	3.50	0.01	0.50	4.44	98.55
HL01	74.68	0.14	12.62	0.52	0.03	0.48	0.69	0.18	3.72	0.04	1.01	4.86	98.95
HL03	72.38	0.08	13.82	0.34	0.07	0.24	1.95	0.16	3.91	0.01	0.65	4.83	98.44
L05	74.90	0.05	10.67	0.29	0.12	0.35	2.93	1.55	1.90	0.01	1.94	4.65	99.36

Table 4 Trace element content of “Panlong Jade” samples (10-6)

元素	H02	H04	LH03	LH04	HL01	HL03	L05
Li	4.61	3.93	4.10	3.74	12.30	3.71	15.90
Be	2.36	2.15	2.64	2.25	3.24	2.65	1.73
Sc	1.26	1.10	1.24	1.93	3.26	2.10	2.20
Ti	388.00	361.00	415.00	421.00	784.00	482.00	283.00
V	1.23	1.12	1.55	1.38	6.16	1.52	2.64
Cr	9.56	11.40	9.07	16.10	8.00	8.83	9.11
Mn	186.00	59.50	264.00	878.00	305.00	645.00	1084.00
Co	438.00	493.00	140.00	427.00	161.00	203.00	181.00
Ni	1.42	1.21	1.01	3.38	1.08	1.78	1.71
Cu	1.67	1.67	1.66	2.36	2.94	2.90	1.97
Zn	81.80	520.00	68.60	55.50	24.20	268.00	71.10
Ga	162.00	14.50	17.70	16.20	15.70	18.10	13.40
Ge	1.05	1.17	0.97	0.84	1.02	0.84	1.03
As	2.29	15.10	1.22	3.61	3.23	11.00	2.17
Rb	105.00	100.00	118.00	109.00	100.00	126.00	59.30
Sr	59.50	14.20	24.60	81.60	52.60	61.90	201.00
Y	19.50	17.40	15.50	17.60	17.80	19.90	14.30
Zr	73.70	70.20	77.00	77.20	110.00	87.40	69.00
Nb	4.83	4.05	5.53	4.91	5.90	7.57	4.20
Mo	1.23	1.22	2.57	1.19	1.50	3.45	1.48
Cd	0.26	2.55	0.33	0.32	0.03	1.09	0.18
In	0.03	0.03	0.02	0.02	0.02	0.04	0.02
Sn	2.74	2.26	3.42	3.05	2.67	3.73	2.02
Sb	1.16	1.58	0.69	1.31	1.10	1.27	0.69
Cs	7.24	5.98	7.30	5.29	8.69	7.22	5.55
Ba	186.00	118.00	135.00	156.00	545.00	155.00	220.00
La	27.50	24.00	23.80	25.10	33.20	24.60	17.40
Ce	27.90	27.00	28.10	29.20	56.60	27.30	33.70
Pr	5.13	4.64	4.32	4.57	6.16	4.54	3.63
Nd	17.90	16.00	14.90	16.20	21.10	15.90	13.40
Sm	3.57	3.24	2.85	3.25	3.82	3.16	2.84
Eu	0.28	0.27	0.23	0.23	0.52	0.24	0.40
Gd	3.15	2.74	2.49	2.75	3.11	2.89	2.75
Tb	0.58	0.53	0.43	0.50	0.56	0.52	0.47
Dy	3.54	3.33	2.73	3.29	3.25	3.35	2.76
Ho	0.73	0.64	0.57	0.65	0.66	0.70	0.57
Er	2.42	2.04	1.88	2.10	2.16	2.27	1.77
Tm	0.35	0.31	0.28	0.31	0.32	0.37	0.25
Yb	2.36	2.07	1.89	2.15	2.14	2.53	1.69
Lu	0.34	0.32	0.30	0.34	0.33	0.40	0.27
Hf	3.11	2.93	3.24	3.21	3.92	3.74	2.80
Ta	1.17	0.94	1.10	1.14	1.03	1.42	1.03
W	1171.00	1689.00	707.00	1589.00	849.00	1079.00	1099.00
Tl	0.94	0.45	1.25	0.70	0.84	1.34	0.47
Pb	10.90	14.30	6.06	26.70	8.95	13.90	38.40
Bi	0.10	0.07	0.05	0.11	0.06	0.10	0.02
Th	18.20	16.90	16.90	17.70	18.60	18.50	14.40
U	4.66	5.01	5.64	5.90	5.88	6.54	5.11
∑REE	95.75	87.13	84.77	90.64	133.93	88.77	81.90
∑LREE	82.28	75.15	74.20	78.55	121.40	75.74	71.37
∑HREE	13.47	11.98	10.57	12.09	12.53	13.03	10.53
∑LREE/ ∑HREE	6.11	6.27	7.02	6.50	9.69	5.81	6.78
(La/Sm)_N	4.97	4.78	5.39	4.99	5.61	5.03	3.96
(Gd/Lu)_N	1.15	1.06	1.03	1.00	1.16	0.89	1.26
δEu	0.25	0.27	0.26	0.23	0.45	0.24	0.43
δCe	0.54	0.59	0.63	0.62	0.90	0.59	0.99
Zr/Ti	0.19	0.19	0.19	0.18	0.14	0.18	0.24
Nb/Y	0.25	0.23	0.36	0.28	0.33	0.38	0.29
Nb/Ta	4.13	4.31	5.03	4.31	5.73	5.33	4.08
Th/U	3.91	3.37	3.00	3.00	3.16	2.83	2.82
Rb/Sr	1.76	7.04	4.80	1.34	1.90	2.04	0.30

Table 4 Trace element content of “Panlong Jade” samples (10-6)

元素	H02	H04	LH03	LH04	HL01	HL03	L05
Li	4.61	3.93	4.10	3.74	12.30	3.71	15.90
Be	2.36	2.15	2.64	2.25	3.24	2.65	1.73
Sc	1.26	1.10	1.24	1.93	3.26	2.10	2.20
Ti	388.00	361.00	415.00	421.00	784.00	482.00	283.00
V	1.23	1.12	1.55	1.38	6.16	1.52	2.64
Cr	9.56	11.40	9.07	16.10	8.00	8.83	9.11
Mn	186.00	59.50	264.00	878.00	305.00	645.00	1084.00
Co	438.00	493.00	140.00	427.00	161.00	203.00	181.00
Ni	1.42	1.21	1.01	3.38	1.08	1.78	1.71
Cu	1.67	1.67	1.66	2.36	2.94	2.90	1.97
Zn	81.80	520.00	68.60	55.50	24.20	268.00	71.10
Ga	162.00	14.50	17.70	16.20	15.70	18.10	13.40
Ge	1.05	1.17	0.97	0.84	1.02	0.84	1.03
As	2.29	15.10	1.22	3.61	3.23	11.00	2.17
Rb	105.00	100.00	118.00	109.00	100.00	126.00	59.30
Sr	59.50	14.20	24.60	81.60	52.60	61.90	201.00
Y	19.50	17.40	15.50	17.60	17.80	19.90	14.30
Zr	73.70	70.20	77.00	77.20	110.00	87.40	69.00
Nb	4.83	4.05	5.53	4.91	5.90	7.57	4.20
Mo	1.23	1.22	2.57	1.19	1.50	3.45	1.48
Cd	0.26	2.55	0.33	0.32	0.03	1.09	0.18
In	0.03	0.03	0.02	0.02	0.02	0.04	0.02
Sn	2.74	2.26	3.42	3.05	2.67	3.73	2.02
Sb	1.16	1.58	0.69	1.31	1.10	1.27	0.69
Cs	7.24	5.98	7.30	5.29	8.69	7.22	5.55
Ba	186.00	118.00	135.00	156.00	545.00	155.00	220.00
La	27.50	24.00	23.80	25.10	33.20	24.60	17.40
Ce	27.90	27.00	28.10	29.20	56.60	27.30	33.70
Pr	5.13	4.64	4.32	4.57	6.16	4.54	3.63
Nd	17.90	16.00	14.90	16.20	21.10	15.90	13.40
Sm	3.57	3.24	2.85	3.25	3.82	3.16	2.84
Eu	0.28	0.27	0.23	0.23	0.52	0.24	0.40
Gd	3.15	2.74	2.49	2.75	3.11	2.89	2.75
Tb	0.58	0.53	0.43	0.50	0.56	0.52	0.47
Dy	3.54	3.33	2.73	3.29	3.25	3.35	2.76
Ho	0.73	0.64	0.57	0.65	0.66	0.70	0.57
Er	2.42	2.04	1.88	2.10	2.16	2.27	1.77
Tm	0.35	0.31	0.28	0.31	0.32	0.37	0.25
Yb	2.36	2.07	1.89	2.15	2.14	2.53	1.69
Lu	0.34	0.32	0.30	0.34	0.33	0.40	0.27
Hf	3.11	2.93	3.24	3.21	3.92	3.74	2.80
Ta	1.17	0.94	1.10	1.14	1.03	1.42	1.03
W	1171.00	1689.00	707.00	1589.00	849.00	1079.00	1099.00
Tl	0.94	0.45	1.25	0.70	0.84	1.34	0.47
Pb	10.90	14.30	6.06	26.70	8.95	13.90	38.40
Bi	0.10	0.07	0.05	0.11	0.06	0.10	0.02
Th	18.20	16.90	16.90	17.70	18.60	18.50	14.40
U	4.66	5.01	5.64	5.90	5.88	6.54	5.11
∑REE	95.75	87.13	84.77	90.64	133.93	88.77	81.90
∑LREE	82.28	75.15	74.20	78.55	121.40	75.74	71.37
∑HREE	13.47	11.98	10.57	12.09	12.53	13.03	10.53
∑LREE/ ∑HREE	6.11	6.27	7.02	6.50	9.69	5.81	6.78
(La/Sm)_N	4.97	4.78	5.39	4.99	5.61	5.03	3.96
(Gd/Lu)_N	1.15	1.06	1.03	1.00	1.16	0.89	1.26
δEu	0.25	0.27	0.26	0.23	0.45	0.24	0.43
δCe	0.54	0.59	0.63	0.62	0.90	0.59	0.99
Zr/Ti	0.19	0.19	0.19	0.18	0.14	0.18	0.24
Nb/Y	0.25	0.23	0.36	0.28	0.33	0.38	0.29
Nb/Ta	4.13	4.31	5.03	4.31	5.73	5.33	4.08
Th/U	3.91	3.37	3.00	3.00	3.16	2.83	2.82
Rb/Sr	1.76	7.04	4.80	1.34	1.90	2.04	0.30

Fig.10 Primitive mantle normalized trace element spider diagrams (a) and chondrite-normalized REE distribution patterns (b) (normalization values after reference[23])

Fig.11 CL images and analysis spots of zircon grains in “Panlong Jade” samples

Table 5 Calculation of age data of zircons from “Panlong Jade”

样品编号	含量(10^-6)			²³²Th/ ²³⁸U	同位素比值						同位素年龄(Ma)						谐和度 (%)
样品编号	U	Th	Pb	²³²Th/ ²³⁸U	²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁶Pb/ ²³⁸U	1σ	谐和度 (%)
LH10-01	1648.30	901.79	86.45	0.52682	0.05073	0.00041	0.25349	0.00415	0.03607	0.00047	228.36	18.56	229.40	3.36	228.44	2.91	99.58
LH10-02	810.29	466.33	35.65	0.56302	0.05176	0.00117	0.25463	0.00614	0.03578	0.00074	274.77	51.67	230.33	4.97	226.62	4.60	98.39
LH10-03	567.14	434.53	28.71	0.72014	0.04975	0.00060	0.24838	0.00477	0.03608	0.00067	183.54	28.01	225.26	3.88	228.49	4.16	98.57
LH10-04	1607.72	963.61	76.84	0.57496	0.05060	0.00062	0.25072	0.00443	0.03587	0.00064	222.57	28.18	227.16	3.60	227.21	3.97	99.98
LH10-05	1149.91	619.22	54.13	0.51749	0.05108	0.00068	0.25490	0.00471	0.03612	0.00068	244.64	30.85	230.55	3.81	228.71	4.22	99.20
LH10-06	674.30	248.63	33.94	0.34917	0.05093	0.00076	0.25518	0.00450	0.03610	0.00050	237.61	34.51	230.77	3.64	228.63	3.10	99.07
LH10-07	132.65	64.95	6.50	0.46040	0.05103	0.00136	0.25144	0.00680	0.03580	0.00048	242.27	61.58	227.74	5.52	226.75	2.98	99.56
LH10-08	560.77	402.55	27.46	0.67997	0.05130	0.00095	0.25225	0.00465	0.03570	0.00057	254.43	42.51	228.40	3.77	226.11	3.53	99.00
LH10-09	1507.83	612.43	70.15	0.38155	0.05046	0.00053	0.24916	0.00359	0.03573	0.00043	216.07	24.26	225.89	2.92	226.29	2.66	99.83
LH10-10	1208.20	637.94	64.97	0.49588	0.05122	0.00079	0.25450	0.00551	0.03609	0.00044	250.95	35.65	230.23	4.46	228.57	2.77	99.28
LH10-11	948.85	547.37	51.16	0.54084	0.05070	0.00104	0.25148	0.00636	0.03608	0.00045	227.07	47.44	227.77	5.16	228.52	2.82	99.67
LH10-12	1017.20	457.14	46.28	0.42812	0.05135	0.00078	0.25471	0.00434	0.03597	0.00052	256.57	35.00	230.40	3.51	227.81	3.21	98.88
LH10-13	1174.50	707.55	55.22	0.57174	0.05124	0.00084	0.25677	0.00471	0.03631	0.00054	251.54	37.80	232.06	3.81	229.94	3.35	99.08
LH10-14	1517.29	856.30	78.92	0.53048	0.05082	0.00080	0.25416	0.00319	0.03598	0.00053	232.64	36.36	229.95	2.59	227.86	3.32	99.09
LH10-15	1174.06	568.44	50.59	0.46255	0.05032	0.00061	0.24788	0.00491	0.03562	0.00051	209.59	28.27	224.86	3.99	225.60	3.17	99.67
LH10-16	954.84	503.03	46.37	0.49942	0.05130	0.00067	0.25673	0.00455	0.03614	0.00048	254.21	30.25	232.02	3.68	228.87	2.97	98.64
LH10-17	626.88	310.71	26.31	0.46621	0.05126	0.00128	0.25240	0.00774	0.03558	0.00054	252.45	57.45	228.52	6.28	225.39	3.35	98.63

Table 5 Calculation of age data of zircons from “Panlong Jade”

样品编号	含量(10^-6)			²³²Th/ ²³⁸U	同位素比值						同位素年龄(Ma)						谐和度 (%)
样品编号	U	Th	Pb	²³²Th/ ²³⁸U	²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁶Pb/ ²³⁸U	1σ	谐和度 (%)
LH10-01	1648.30	901.79	86.45	0.52682	0.05073	0.00041	0.25349	0.00415	0.03607	0.00047	228.36	18.56	229.40	3.36	228.44	2.91	99.58
LH10-02	810.29	466.33	35.65	0.56302	0.05176	0.00117	0.25463	0.00614	0.03578	0.00074	274.77	51.67	230.33	4.97	226.62	4.60	98.39
LH10-03	567.14	434.53	28.71	0.72014	0.04975	0.00060	0.24838	0.00477	0.03608	0.00067	183.54	28.01	225.26	3.88	228.49	4.16	98.57
LH10-04	1607.72	963.61	76.84	0.57496	0.05060	0.00062	0.25072	0.00443	0.03587	0.00064	222.57	28.18	227.16	3.60	227.21	3.97	99.98
LH10-05	1149.91	619.22	54.13	0.51749	0.05108	0.00068	0.25490	0.00471	0.03612	0.00068	244.64	30.85	230.55	3.81	228.71	4.22	99.20
LH10-06	674.30	248.63	33.94	0.34917	0.05093	0.00076	0.25518	0.00450	0.03610	0.00050	237.61	34.51	230.77	3.64	228.63	3.10	99.07
LH10-07	132.65	64.95	6.50	0.46040	0.05103	0.00136	0.25144	0.00680	0.03580	0.00048	242.27	61.58	227.74	5.52	226.75	2.98	99.56
LH10-08	560.77	402.55	27.46	0.67997	0.05130	0.00095	0.25225	0.00465	0.03570	0.00057	254.43	42.51	228.40	3.77	226.11	3.53	99.00
LH10-09	1507.83	612.43	70.15	0.38155	0.05046	0.00053	0.24916	0.00359	0.03573	0.00043	216.07	24.26	225.89	2.92	226.29	2.66	99.83
LH10-10	1208.20	637.94	64.97	0.49588	0.05122	0.00079	0.25450	0.00551	0.03609	0.00044	250.95	35.65	230.23	4.46	228.57	2.77	99.28
LH10-11	948.85	547.37	51.16	0.54084	0.05070	0.00104	0.25148	0.00636	0.03608	0.00045	227.07	47.44	227.77	5.16	228.52	2.82	99.67
LH10-12	1017.20	457.14	46.28	0.42812	0.05135	0.00078	0.25471	0.00434	0.03597	0.00052	256.57	35.00	230.40	3.51	227.81	3.21	98.88
LH10-13	1174.50	707.55	55.22	0.57174	0.05124	0.00084	0.25677	0.00471	0.03631	0.00054	251.54	37.80	232.06	3.81	229.94	3.35	99.08
LH10-14	1517.29	856.30	78.92	0.53048	0.05082	0.00080	0.25416	0.00319	0.03598	0.00053	232.64	36.36	229.95	2.59	227.86	3.32	99.09
LH10-15	1174.06	568.44	50.59	0.46255	0.05032	0.00061	0.24788	0.00491	0.03562	0.00051	209.59	28.27	224.86	3.99	225.60	3.17	99.67
LH10-16	954.84	503.03	46.37	0.49942	0.05130	0.00067	0.25673	0.00455	0.03614	0.00048	254.21	30.25	232.02	3.68	228.87	2.97	98.64
LH10-17	626.88	310.71	26.31	0.46621	0.05126	0.00128	0.25240	0.00774	0.03558	0.00054	252.45	57.45	228.52	6.28	225.39	3.35	98.63

Table 6 Trace element content of zircons from “Panlong Jade” samples (10-6)

样品编号	Ti	Sr	Nb	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb
LH10-01	-0.74	0.26	22.93	0.34	41.26	0.27	3.42	8.14	0.08	54.05	20.68
LH10-02	0.92	0.34	5.39	0.03	26.53	0.25	7.10	14.76	0.20	75.76	27.64
LH10-03	3.76	0.27	4.36	0.01	31.45	0.22	3.95	7.51	0.23	40.59	13.59
LH10-04	1.25	0.41	22.19	0.02	44.32	0.12	2.62	8.29	0.05	54.47	21.66
LH10-05	1.12	0.71	16.65	0.23	33.70	0.52	5.26	8.35	0.15	45.48	16.91
LH10-06	0.84	0.27	10.30	0.05	20.82	0.11	1.72	4.73	0.08	28.77	11.36
LH10-07	8.55	1.24	0.92	1.00	8.05	0.49	3.84	4.66	0.74	20.55	6.65
LH10-08	5.01	0.94	3.41	20.39	73.42	7.62	42.72	27.24	0.69	95.75	30.54
LH10-09	1.74	1.55	24.76	0.11	48.99	0.38	4.26	10.55	0.16	60.85	23.48
LH10-10	2.25	0.33	13.22	-	24.58	0.08	1.62	5.25	0.06	34.91	14.02
LH10-11	0.39	0.55	7.57	0.23	28.24	0.34	5.51	15.21	0.11	85.94	31.98
LH10-12	6.62	0.71	17.14	1.16	41.16	3.43	56.69	192.62	12.82	600.87	115.92
LH10-13	2.55	0.78	10.74	2.47	40.04	1.59	12.81	19.15	0.20	93.64	33.21
LH10-14	2.82	0.60	20.19	0.04	37.69	0.20	2.52	8.27	0.10	48.68	18.78
LH10-15	1.88	5.05	17.57	0.18	38.20	0.59	5.80	9.32	0.19	46.32	17.78
LH10-16	0.83	0.51	9.23	8.92	50.40	4.43	24.39	18.46	0.06	83.71	29.85
LH10-17	2.50	1.64	7.24	0.36	18.44	0.86	7.33	10.55	0.17	42.77	15.92
样品编号	Dy	Ho	Er	Tm	Yb	Lu	Hf	Ta	δEu	δCe
LH10-01	261.10	92.50	414.32	83.50	728.55	109.87	8150.12	6.76	0.01	31.55
LH10-02	345.38	120.23	523.28	108.13	968.50	144.60	8824.99	1.60	0.01	31.15
LH10-03	165.79	58.42	259.67	54.28	500.25	80.46	7382.29	1.68	0.03	43.55
LH10-04	269.03	93.85	409.56	82.23	703.25	100.57	8438.72	6.55	0.01	104.50
LH10-05	208.61	74.79	324.15	67.07	586.45	87.08	8846.35	4.80	0.02	17.04
LH10-06	146.46	53.43	241.42	50.64	447.19	71.14	8169.13	3.50	0.02	49.09
LH10-07	81.92	29.58	135.26	29.01	274.80	46.98	5647.70	0.37	0.20	2.82
LH10-08	335.32	115.01	488.91	97.83	872.00	134.32	7199.86	1.04	0.04	1.44
LH10-09	299.06	108.01	480.53	97.83	865.15	129.85	8300.22	6.16	0.01	35.87
LH10-10	180.54	64.31	296.37	59.55	515.99	80.65	7953.48	4.35	0.01	99.03
LH10-11	410.42	142.13	604.12	122.08	985.92	151.86	6629.24	1.92	0.01	20.26
LH10-12	771.88	164.97	541.42	94.55	760.91	108.53	8662.23	4.51	0.11	3.28
LH10-13	411.55	145.65	629.85	127.36	1114.15	168.36	8536.71	2.55	0.01	4.82
LH10-14	234.30	85.51	377.88	76.72	661.42	101.10	8408.59	5.71	0.01	53.41
LH10-15	225.39	80.31	365.73	72.17	653.00	97.56	8794.51	4.99	0.02	17.78
LH10-16	370.65	129.60	566.51	111.53	958.65	143.57	7497.28	2.17	-	1.95
LH10-17	196.92	69.84	309.69	65.56	596.61	90.52	8455.95	1.61	0.02	5.72

Table 6 Trace element content of zircons from “Panlong Jade” samples (10-6)

样品编号	Ti	Sr	Nb	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb
LH10-01	-0.74	0.26	22.93	0.34	41.26	0.27	3.42	8.14	0.08	54.05	20.68
LH10-02	0.92	0.34	5.39	0.03	26.53	0.25	7.10	14.76	0.20	75.76	27.64
LH10-03	3.76	0.27	4.36	0.01	31.45	0.22	3.95	7.51	0.23	40.59	13.59
LH10-04	1.25	0.41	22.19	0.02	44.32	0.12	2.62	8.29	0.05	54.47	21.66
LH10-05	1.12	0.71	16.65	0.23	33.70	0.52	5.26	8.35	0.15	45.48	16.91
LH10-06	0.84	0.27	10.30	0.05	20.82	0.11	1.72	4.73	0.08	28.77	11.36
LH10-07	8.55	1.24	0.92	1.00	8.05	0.49	3.84	4.66	0.74	20.55	6.65
LH10-08	5.01	0.94	3.41	20.39	73.42	7.62	42.72	27.24	0.69	95.75	30.54
LH10-09	1.74	1.55	24.76	0.11	48.99	0.38	4.26	10.55	0.16	60.85	23.48
LH10-10	2.25	0.33	13.22	-	24.58	0.08	1.62	5.25	0.06	34.91	14.02
LH10-11	0.39	0.55	7.57	0.23	28.24	0.34	5.51	15.21	0.11	85.94	31.98
LH10-12	6.62	0.71	17.14	1.16	41.16	3.43	56.69	192.62	12.82	600.87	115.92
LH10-13	2.55	0.78	10.74	2.47	40.04	1.59	12.81	19.15	0.20	93.64	33.21
LH10-14	2.82	0.60	20.19	0.04	37.69	0.20	2.52	8.27	0.10	48.68	18.78
LH10-15	1.88	5.05	17.57	0.18	38.20	0.59	5.80	9.32	0.19	46.32	17.78
LH10-16	0.83	0.51	9.23	8.92	50.40	4.43	24.39	18.46	0.06	83.71	29.85
LH10-17	2.50	1.64	7.24	0.36	18.44	0.86	7.33	10.55	0.17	42.77	15.92
样品编号	Dy	Ho	Er	Tm	Yb	Lu	Hf	Ta	δEu	δCe
LH10-01	261.10	92.50	414.32	83.50	728.55	109.87	8150.12	6.76	0.01	31.55
LH10-02	345.38	120.23	523.28	108.13	968.50	144.60	8824.99	1.60	0.01	31.15
LH10-03	165.79	58.42	259.67	54.28	500.25	80.46	7382.29	1.68	0.03	43.55
LH10-04	269.03	93.85	409.56	82.23	703.25	100.57	8438.72	6.55	0.01	104.50
LH10-05	208.61	74.79	324.15	67.07	586.45	87.08	8846.35	4.80	0.02	17.04
LH10-06	146.46	53.43	241.42	50.64	447.19	71.14	8169.13	3.50	0.02	49.09
LH10-07	81.92	29.58	135.26	29.01	274.80	46.98	5647.70	0.37	0.20	2.82
LH10-08	335.32	115.01	488.91	97.83	872.00	134.32	7199.86	1.04	0.04	1.44
LH10-09	299.06	108.01	480.53	97.83	865.15	129.85	8300.22	6.16	0.01	35.87
LH10-10	180.54	64.31	296.37	59.55	515.99	80.65	7953.48	4.35	0.01	99.03
LH10-11	410.42	142.13	604.12	122.08	985.92	151.86	6629.24	1.92	0.01	20.26
LH10-12	771.88	164.97	541.42	94.55	760.91	108.53	8662.23	4.51	0.11	3.28
LH10-13	411.55	145.65	629.85	127.36	1114.15	168.36	8536.71	2.55	0.01	4.82
LH10-14	234.30	85.51	377.88	76.72	661.42	101.10	8408.59	5.71	0.01	53.41
LH10-15	225.39	80.31	365.73	72.17	653.00	97.56	8794.51	4.99	0.02	17.78
LH10-16	370.65	129.60	566.51	111.53	958.65	143.57	7497.28	2.17	-	1.95
LH10-17	196.92	69.84	309.69	65.56	596.61	90.52	8455.95	1.61	0.02	5.72

Fig.12 Chondrite-normalized REE distribution patterns of zirons from “Panlong Jade” (normalization values after reference[23])

Fig.13 Discrimination plots for magmatic and hydrothermal zircon[25]

Fig.14 U-Pb concordant diagram(a) and 206Pb/238U age distribution diagram(b) of zircons from “Panlong Jade”

Fig.15 Zr/Ti-Nb/Y diagrams of “Panlong Jade” samples[29]

Table 7 Temperature calculation results for “Panlong Jade”

点位	HL7-1	HL7-2	HL8-1	HL8-2	HL8-3	L10-1	L10-2	L11-1	L11-2	L11-3
Ti	0.0044	0.0055	0.0054	0.0015	0.0054	0.0010	0.0044	0.0039	0.0093	0.0134
Mg/(Mg+Fe)	0.3918	0.3727	0.3271	0.3745	0.4055	0.5542	0.2920	0.3766	0.4476	0.5082
变质温度(℃)	315	334	330	228	334	209	310	304	394	442

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