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www.reference.com/science/six-basic-crystal-shapes-1bbab...

There are seven basic crystal shapes: cubic (isometric), tetragonal, orthorhombic, hexagonal, trigonal, triclinic and monoclinic. A crystal's shape is determined by one of seven crystal lattice systems, which are used to describe the crystal's geometric symmetry.

www.thoughtco.com/types-of-crystals-602156

Hexagonal: When you look at the crystal on end, the cross-section is a six-sided prism or hexagon. Trigonal: These crystals possess a single 3-fold axis of rotation instead of the 6-fold axis of the hexagonal division. Triclinic: These crystals are not usually symmetrical from one side to the other, which can lead to some fairly strange shapes.

quizlet.com/7102462/6-crystal-shapes-flash-cards

6 crystal shapes. mrs. wanders class. STUDY. PLAY. Terms in this set (...) hexagonal. is a six sided figure. Orthorhombic. looks like tissue box and has rectangles on all sides. cubic. four equal sides. monoclinic. shifted in one direction. triclinic. shifted in three directions. tetragonal.

www.crystalage.com/crystal_information/seven_crystal_systems

The seven crystal systems are a method of classifying crystals according to their atomic lattice or structure. The atomic lattice is a three dimensional network of atoms that are arranged in a symmetrical pattern. The shape of the lattice determines not only which crystal system the stone belongs to, but all of its physical properties and appearance.

Crystals of the same substance form a similar structure in nature, but there are many basic crystaline structures in different substances ... The crystal shape, or system, is one of many clues ...

en.wikipedia.org/wiki/Crystal_system

Crystal systems, crystal families and lattice systems are similar but slightly different, and there is widespread confusion between them: in particular the trigonal crystal system is often confused with the rhombohedral lattice system, and the term "crystal system" is sometimes used to mean "lattice system" or "crystal family".

en.wikipedia.org/wiki/Crystal_habit

In mineralogy, crystal habit is the characteristic external shape of an individual crystal or crystal group. A single crystal's habit is a description of its general shape and its crystallographic forms, plus how well developed each form is.. Recognizing the habit may help in identifying a mineral.When the faces are well-developed due to uncrowded growth a crystal is called euhedral, one with ...

www.oum.ox.ac.uk/thezone/minerals/detect/shape.htm

Hexagons have six sides. A quartz crystal is made up of a hexagonal prism, topped by a hexagonal pyramid. Sometimes it is difficult to see the shape of the crystal clearly - they may be just too small. If you do have a large enough crystal, try and find the basic shapes that make it up. Are its faces square, rectangular, or triangular? Can you ...

uwaterloo.ca/earth-sciences-museum/resources/crystal-shapes

Crystallography is the study of the formation, structure and properties of crystals. A crystals structure is defined by the particular repeating arrangement of atoms throughout the crystal. The external appearance of the crystals is often related to its internal arrangement of atoms. There are six basic crystal systems.

www.thoughtco.com/snowflake-crystal-shapes-609172

Stellar dendrites are a common snowflake shape. These are the branching six-sided shapes most people associate with snowflakes. ... Make a Crystal Snowflake Ornament That Glows in the Dark. An A-to-Z List of Important Inventions. What Is a Crystal? Sand - Terminology, Composition, Shape, and More.

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