- Geode (Wikipedia)
A geode (/ˈdʒiː.oʊd/; from Ancient Greek γεώδης (geṓdēs) ’earthlike’) is a geological secondary formation within sedimentary and volcanic rocks. Geodes are hollow, vaguely spherical rocks, in which masses of mineral matter (which may include crystals) are secluded. The crystals are formed by the filling of vesicles in volcanic and subvolcanic rocks by minerals deposited from hydrothermal fluids; or by the dissolution of syn-genetic concretions and partial filling by the same or other minerals precipitated from water, groundwater, or hydrothermal fluids.
- Marie Antoinette (Wikipedia)
Marie Antoinette (/ˌæntwəˈnɛt, ˌɒ̃t-/; French: [maʁi ɑ̃twanɛt]; Marie Antoinette Josèphe Jeanne; 2 November 1755 – 16 October 1793) was the last queen of France prior to the French Revolution. She was born an archduchess of Austria, and was the penultimate child and youngest daughter of Empress Maria Theresa and Emperor Francis I. She became dauphine of France in May 1770 at age 14 upon her marriage to Louis-Auguste, heir apparent to the French throne. On 10 May 1774, her husband ascended the throne as Louis XVI and she became queen.