Petrographic school collection: 20 rocks

20 rock forming mineralsin plastic collector's boxHandpiece: approx. 20 x 20 mmContains: Quartz, microcline, albite, leucite, sodalite, diopside, augite, actinolite, hornblende, olivine, muscovite, biotite, calcite, magnesite, andalusite, sillimanite, disthene, staurolite, epidote and garnet. The collections come in sturdy compartmented plastic boxes. The pieces, measuring about 2 x 2 cm, are numbered according to an explanatory contents list.This collection can also be combined with P05.

Only in german language available!

The Mohs scale of mineral hardness is a helpful tool for identifying minerals.Standard Mohs scale with nine reference minerals, a white streak plate, and instructions.Delivered in a sturdy wooden collection box.Handcrafted at Dr. F. Krantz in Bonn, Germany.How to use a Mohs scale? Watch on Youtube!Measures: 18.5 x 11.5 x 5.5 cm (7 x 4.5 x 2.2 inches)Size of minerals: approx. 2.5 x 3 cm (1 x 1.2 inches) Colors in product photos may vary slightly from those of the original product due to technical reasons. Our images serve as a reference; when you purchase, you will receive a product of equivalent quality.

Unglazed porcelain tile for determining the streak color (powder color) of a mineral. For light-colored minerals, we recommend a black streak plate, a white plate is suitable for dark minerals in order to clearly see the streak.Size: 50 x 50 x 3 mmColor: whiteMaterial: hard porcelainColors on product pictures may differ from those of the original product due to technical reasons. Our images are for reference only, upon purchase you will receive one product of equivalent quality.