Amber bipyramidal calcite crystals are perched upon sphalerite matrix, Elmwood Mine, Carthage, Tennessee, USA.

Sphalerite displays dark brown color with resinous to submetallic luster. The calcite exhibits distinct bipyramidal crystal form with smooth crystal faces and good vitreous luster. The contrast between amber calcite and dark brown sphalerite creates a distinctive hydrothermal mineral assemblage.

琥珀色双锥方解石晶体生长于闪锌矿基底之上，产地：美国田纳西州迦太基市埃尔姆伍德矿。

闪锌矿呈深棕色，具备树脂光泽至半金属光泽。方解石拥有标准双锥晶形，晶面平整，玻璃光泽良好。琥珀色方解石与深棕色闪锌矿色彩反差强烈，是特征鲜明的热液共生矿物组合。

Dimension: 22.7×10.5×7.2cm.

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