Educational collection: Fracture (6 minerals)
€24.00
Currently not available, Delivery time 1-3 days
Product information "Educational collection: Fracture (6 minerals)"
- 6 Minerals
- Specimens: approx. 20 x 20 mm
- in a collector's case made of plastic
“Fracture” describes the irregularly shaped surfaces of minerals that result from a deliberate
blow or from pressure. It is an important tool for identifying minerals.
This collection of specimens illustrates the most important types of irregular fractures.
All specimens are numbered according to the list of contents.
Our collections are handcrafted by Dr. F. Krantz in Bonn.
Please note that minerals are natural products and no two pieces ever look exactly alike.
Due to technical limitations, colors in product photos may vary slightly from those of the actual specimen.
Our images are provided for reference; upon purchase, you will receive a collection of equivalent quality.
Login
ebenso empfehlenswert / to recommend
12 mineralshand pieces: approx. 20 x 20 mmin plastic collector's caseThis educational collection presents the most important types of cleavage on the basis of 12 minerals. It is delivered in a compartmented plastic case. The pieces are about 2 x 2 cm and numbered according to the contents list.
Prices incl. VAT plus shipping costs
7 MineralsSpecimens: approx. 20 x 20 mmin a segmented plastic collector's case“Tenacity” refers to the varying behavior of minerals under mechanical stress, such as compression and tension. Here, both the behavior at the mineral's surface as well as that of the entire crystal are observed. The specimens i n this collection are numbered according to a list of contents.Our collections are handcrafted at Dr. F. Krantz’s premises in Bonn. Please note minerals are natural products and no two pieces will ever look exactly alike.Due to technical limitations, colors in product photos may vary slightly from those of the actual specimen.Our images serve as a reference; upon purchase, you will receive a collection of equivalent quality.
Prices incl. VAT plus shipping costs
12 mineralshand pieces: approx. 20 x 20 mmin plastic collector's caseA training collection with representation of the different luster types as well as luster quality (metal, diamond, glass, fat, mother-of-pearl, porcelain and silk luster; matte - splendid). The pieces are about 2 x 2 cm and numbered according to the contents list.
Prices incl. VAT plus shipping costs
10 mineralsHandpiece: 20 x 20 mmin plastic collector's boxTransparency, birefringence, pleochroism and color iridescence are demonstrated on selected pieces. This study collection comes in a compartmented plastic case. The specimens are approximately 2 x 2 cm and numbered according to the contents list.
Prices incl. VAT plus shipping costs
15 mineralsHandpiece: approx. 20 x 20 mmin subdivided collector's boxThis study collection shows the fluorescent properties of certain minerals. It is delivered in a collector's plastic case. The pieces are about 2 x 2 cm and numbered according to the contents list.
Prices incl. VAT plus shipping costs
18 mineralshandpiece: approx. 20 x 20 mmin plastic collector's boxThis study compilation shows dia-, para-, as well as ferromagnetism, pyro-, and piezoelectricity as well as examples of conductors, non-conductors, and insulators on the basis of various minerals. The pieces are about 2 x 2 cm and numbered according to the contents list.
Prices incl. VAT plus shipping costs
15 mineralshand pieces each approx. 20 x 20 mmin subdivided plastic collection boxA study collection showing the different specific weights of minerals, from extremely light specimens like carnalite, to medium weight specimens like calcite and fluorite, to extremely heavy minerals like cinnabar stone. The practice collection comes in a subdivided collection box. The specimens are on average 2 x 2 cm in size. They are numbered according to a contents list containing all relevant data.
Prices incl. VAT plus shipping costs
9 mineralshandpiece: 20 x 20 mmin plastic caseincluding line chartThis educational collection is for checking the line versus intrinsic color of minerals. It comes in fanned plastic case and with a porcelain line chart. The pieces are about 2 x 2 cm and numbered according to the contents list.
Prices incl. VAT plus shipping costs