Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
corona
Directory
References
Images
photomicrograph of corroded garnet
Discover
World Data Locator Map: Australia
Is Australia an Island?
Colorful winter sunset
What's the Difference Between a Solstice and an Equinox?
Four year old boy with grandfather and father lighting Hanukkah menorah. Photo taken on: December 21st, 2009
Which Is Correct: Hanukkah or Chanukah?
Srinivasa Ramanujan, Indian mathematician and autodidact.
6 Interesting Facts about Srinivasa Ramanujan
Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro
Why Is Christmas in December?
Saint Lucia Day. Young girl wears Lucia crown (tinsel halo) with candles. Holds Saint Lucia Day currant laced saffron buns (lussekatter or Lucia's cats). Observed December 13 honor virgin martyr Santa Lucia (St. Lucy). Luciadagen, Christmas, Sweden
7 Winter Solstice Celebrations From Around the World
Town of Sisimiut located on the coast of the Davis Strait on Kangerluarsunnguaq Bay, Greenland
The Largest Islands in the World

corona

mineralogy

Learn about this topic in these articles:

structure of reaction texture

  • gneiss
    In metamorphic rock: Major features

    …may be surrounded by a corona (reaction rim) of the mineral cordierite. Other minerals present in the matrix could include sillimanite, quartz, biotite, and alkali feldspar. These textural features suggest the following reaction relationship between garnet, sillimanite, quartz, and cordierite: garnet (2Mg3Al2Si3O12) + sillimanite (4Al

    Read More