عينة معدنية — 5

Black cassiterite block with silver mica from Xuebaoding, Sichuan, China, held in gloved hand

Black Cassiterite with Mica — Xuebaoding · 3.1 cm, 30 g

3.1 cm (1.22 in) · Xuebaoding, Pingwu, China

≈‏114 د.إ.‏

Black cassiterite with white calcite like a snow mountain from Xuebaoding, Sichuan, China, held in gloved hand

Black Cassiterite with Mica — Xuebaoding · 3.1 cm, 48 g

3.1 cm (1.22 in) · Xuebaoding, Pingwu, China

≈‏140 د.إ.‏

Black cassiterite crystal group with mica from Xuebaoding, Sichuan, China, held in gloved hand

Black Cassiterite with Mica — Xuebaoding, Sichuan · 4.2 cm

4.2 cm (1.65 in) · Xuebaoding, Pingwu, China

≈‏283 د.إ.‏

Black cassiterite crystal in pale mica from Xuebaoding, Sichuan, China, held in gloved hand

Black Cassiterite with Mica — Xuebaoding, Sichuan · 4.5 cm

4.5 cm (1.77 in) · Xuebaoding, Pingwu, China

≈‏283 د.إ.‏

Black cassiterite crystal on tan mica from Xuebaoding, Sichuan, China, held in gloved hand

Black Cassiterite with Mica — Xuebaoding, Sichuan · 5.5 cm

5.5 cm (2.17 in) · Xuebaoding, Pingwu, China

≈‏297 د.إ.‏

Black cassiterite plate with pale mica from Xuebaoding, Sichuan, China, held in gloved hand

Black Cassiterite with Mica — Xuebaoding, Sichuan · 5.7 cm

5.7 cm (2.24 in) · Xuebaoding, Pingwu, China

≈‏264 د.إ.‏

Black lustrous cassiterite crystal group on white matrix from Xuebaoding, Sichuan

Thumbnail Black Cassiterite — Sichuan, China

2.2 cm (0.87 in) · Sichuan Province, China

≈‏455 د.إ.‏

Black lustrous cassiterite crystal group from Xuebaoding, Sichuan, China

Thumbnail Black Cassiterite — Sichuan, China · 2.8 cm

2.8 cm (1.10 in) · Sichuan Province, China

≈‏297 د.إ.‏

Tiny black cassiterite crystal with white flecks from Xuebaoding, Sichuan, China, held in gloved hand

Thumbnail Black Cassiterite — Xuebaoding, Sichuan · 2.1 cm, 15.4 g

2.1 cm (0.83 in) · Xuebaoding, Pingwu, China

≈‏162 د.إ.‏

Tiny black cassiterite with iridescent sheen from Xuebaoding, Sichuan, China, held in gloved hand

Thumbnail Black Cassiterite — Xuebaoding, Sichuan · 2.1 cm, 15.7 g

2.1 cm (0.83 in) · Xuebaoding, Pingwu, China

≈‏162 د.إ.‏

Black cassiterite crystal with bright faces from Xuebaoding, Sichuan, China, held in gloved hand

Thumbnail Black Cassiterite — Xuebaoding, Sichuan, China · 2.7 cm

2.7 cm (1.06 in) · Xuebaoding, Pingwu, China

≈‏169 د.إ.‏

Black cassiterite crystal group from Xuebaoding, Sichuan, China, held in gloved hand

Black Cassiterite — Xuebaoding, Sichuan, China · 3.8 cm

3.8 cm (1.50 in) · Xuebaoding, Pingwu, China

≈‏162 د.إ.‏

Tiny black double-terminated quartz with side crystal from Yunnan, China, held in gloved hand

Thumbnail Black Double-Terminated Quartz — Yunnan, China · 2.1 cm

2.1 cm (0.83 in) · Yunnan Province, China

≈‏136 د.إ.‏

Tiny black double-terminated quartz from Yunnan, China, held in gloved hand

Thumbnail Black Double-Terminated Quartz — Yunnan · 2.6 cm, 3.6 g

2.6 cm (1.02 in) · Yunnan Province, China

≈‏99 د.إ.‏

Stout black double-terminated quartz with clear cap from Yunnan, China, held in gloved hand

Thumbnail Black Double-Terminated Quartz — Yunnan · 2.6 cm, 5.2 g

2.6 cm (1.02 in) · Yunnan Province, China

≈‏140 د.إ.‏

Stout black double-terminated quartz from Yunnan, China, held in gloved hand

Thumbnail Black Double-Terminated Quartz — Yunnan, China · 2.8 cm

2.8 cm (1.10 in) · Yunnan Province, China

≈‏140 د.إ.‏

Tiny black double-terminated quartz with clear rim from Yunnan, China, held in gloved hand

Thumbnail Black Double-Terminated Quartz — Yunnan, China · 2.9 cm

2.9 cm (1.14 in) · Yunnan Province, China

≈‏55 د.إ.‏

Black double-terminated quartz with clear tip from Yunnan, China, held in gloved hand

Black Double-Terminated Quartz — Yunnan · 3.1 cm, 3.9 g

3.1 cm (1.22 in) · Yunnan Province, China

≈‏77 د.إ.‏

Black double-terminated quartz with clear tip from Yunnan, China, held in gloved hand

Black Double-Terminated Quartz — Yunnan · 3.1 cm, 4.4 g

3.1 cm (1.22 in) · Yunnan Province, China

≈‏162 د.إ.‏

Black double-terminated quartz with clear rim from Yunnan, China, held in gloved hand

Black Double-Terminated Quartz — Yunnan · 3.1 cm, 4.5 g

3.1 cm (1.22 in) · Yunnan Province, China

≈‏169 د.إ.‏