An Achene is a single-seeded dry indehiscent fruit in which the seedcoat is not part of the fruit coat. This is the fruit of a Sunflower (Helianthus annuus). Other fruits of this type are: Buttercup (Ranunculus), Clematis (Clematis), Coreopsis (Coreopsis), Dahlia (Dahlia), English Marigold (Calendula), Zinnia (Zinnia).
Pyrite is used in the production of sulfur and sulfuric acid. Pyrite is sometimes an ore of gold and copper.It is also an ore of sulfur, which is used in the production of tires, explosives, disinfectants, medicines, ink, wood preservatives, dyes, matches, and sulfuric acid. Some collector specimens can be quite valuable as well.yrite is used in the production of sulfur and sulfuric acid. Pyrite is sometimes an ore of gold and copper.
Advertisement. Magnetite has a wide variety of uses, both domestic and industrial. It is one of several oxides of iron and has strong magnetic properties. Magnetite is a significant ore of iron and as such, is distinguished from other ores of iron by its tendency to attract and get attracted to magnets.Before we jump towards discussing magnetite uses, let's take a closer look at magnetite itself.dvertisement. Magnetite has a wide variety of uses, both domestic and industrial. It is one of several oxides of iron and has strong magnetic properties. Magnetite is a significant ore of iron and as such, is distinguished from other ores of iron by its tendency to attract and get attracted to magnets.