Definitions for hornstone
horn·stone

Princeton's WordNetRate this definition:0.0 / 0 votes

1. hornfels, hornstonenoun

   a fine-grained metamorphic rock formed by the action of heat on clay rocks

WiktionaryRate this definition:0.0 / 0 votes

1. hornstonenoun

   hornfels

2. Etymology: translation of hornfels.

Samuel Johnson's DictionaryRate this definition:0.0 / 0 votes

1. Hornstonenoun

   A kind of blue stone. Robert Ainsworth

WikipediaRate this definition:0.0 / 0 votes

1. hornstone

   Hornfels is the group name for a set of contact metamorphic rocks that have been baked and hardened by the heat of intrusive igneous masses and have been rendered massive, hard, splintery, and in some cases exceedingly tough and durable. These properties are due to fine grained non-aligned crystals with platy or prismatic habits, characteristic of metamorphism at high temperature but without accompanying deformation. The term is derived from the German word Hornfels, meaning "hornstone", because of its exceptional toughness and texture both reminiscent of animal horns. These rocks were referred to by miners in northern England as whetstones.Most hornfels are fine-grained, and while the original rocks (such as sandstone, shale, slate and limestone) may have been more or less fissile owing to the presence of bedding or cleavage planes, this structure is effaced or rendered inoperative in the hornfels. Though many hornfels show vestiges of the original bedding, they break across this as readily as along it; in fact, they tend to separate into cubical fragments rather than into thin plates. Sheet minerals may be abundant but are aligned at random.Hornfels most commonly form in the aureole of granitic intrusions in the upper or middle crust. Hornfels formed from contact metamorphism by volcanic activity very close to the surface can produce unusual and distinctive minerals. Changes in composition caused by fluids give off by the magmatic body (metasomatism) sometimes takes place. The hornfels facies is the metamorphic facies which occupies the lowest pressure portion of the metamorphic pressure-temperature space.The most common hornfels (the biotite hornfels) are dark-brown to black with a somewhat velvety luster owing to the abundance of small crystals of shining black mica. The lime hornfels are often white, yellow, pale-green, brown and other colors. Green and dark-green are the prevalent tints of the hornfels produced by the alteration of igneous rocks. Although for the most part the constituent grains are too small to be determined by the unaided eye, there are often larger crystals (porphyroblasts) of cordierite, garnet or andalusite scattered through the fine matrix, and these may become very prominent on the weathered faces of the rock.

ChatGPTRate this definition:0.0 / 0 votes

1. hornstone

   Hornstone is a type of fine-grained, compact and hard sedimentary rock, often grey, brown, or black with a silica content. It's usually a type of chert or flint, known for its toughness and the sharp-edged flakes that can be struck from it. The name "hornstone" comes from its similar appearance or feel to that of an animal horn. It was frequently used in the Stone Age to make tools and weapons.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Hornstonenoun

   a siliceous stone, a variety of quartz, closely resembling flint, but more brittle; -- called also chert

Matched Categories

1. • Metamorphic Rock

How to pronounce hornstone?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say hornstone in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of hornstone in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of hornstone in Pythagorean Numerology is: 2

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=hornstone
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Hornstone
3. ^ Samuel Johnson's Dictionary
   https://johnsonsdictionaryonline.com/views/search.php?term=hornstone
4. ^ Wikipedia
   https://en.wikipedia.org/wiki/Hornstone
5. ^ ChatGPT
   https://chat.openai.com
6. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/hornstone