Hornfels Metamorphic Rock - 10 Unpolished Mineral Specimens

Hornfels Metamorphic Rock - 10 Unpolished Mineral Specimens

Overview

Ten unpolished pieces of Hornfels, or hornstone, a rock known for its toughness, texture, and durability. It is sometimes referred to as whetstone.

Warnings

Hornfels Metamorphic Rock - 10 Unpolished Mineral Specimens

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Overview

Ten unpolished pieces of Hornfels, or hornstone, a rock known for its toughness, texture, and durability. It is sometimes referred to as whetstone.

Warnings

Product Details

Hornfels Metamorphic Rock - Pack of 10
by American Educational Products

Translated from German, the name Hornfels means "hornstone". This rock was named as such because it displayed exceptional toughness, and interesting texture, both of which where apparently reminiscent of animal horns. It is considered to be a contact metamorphic rock, meaning that an increase in temperature caused a magma intrusion into a cooler rock, creating a rock that was both tough and durable. Hornfels are also known as whetstones.

It has a wide color range, appearing in nature as a dark brown to black, as well as white, yellow, pale green, green, dark green, brown, and others. They have been known to have distinct banding, which can be attributed to the different rocks that they were in contact with when metamorphosis occurred.

Hornfels is capable of resonating when struck, though whether or not it can be heard would depend on the size of the specimen. In South Africa, they are known as "ring-stones", because they sound like a bell being rung.

Each rock or mineral specimen measures approximately 1-2 inches in length along its longest side.

Additional Information

SKU

AMEP5224B-10PK

Weight

0.5 lb

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