Confectionery Geology

Mohs Scale Lollipop Set

Ten lollipops of allegedly increasing hardness, from talc-soft taffy to a number ten that has never been independently verified.

Merchandise

Streak Plate Three-Pack

Three unglazed porcelain streak plates: one for the field bag, one for the bench, one for the inevitable loss.

Identification

Sphalerite Identification Sheet

The principal zinc ore and a notorious deceiver: brilliant adamantine to resinous luster, six-direction cleavage, and a pale streak that …

Identification

Talc Identification Sheet

The Mohs 1 anchor at the bottom of the scale: so soft a fingernail scratches it, with a greasy, soapy feel no other common mineral shares.

Identification

Magnetite Identification Sheet

The strongly magnetic iron oxide: black streak, octahedral crystals, and a pull on the pocket magnet no lookalike can match.

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