any use of second mineral?
Its main modern use is as an iron ore.
Goethite
Its main modern use is as an iron ore, being referred to as "brown iron ore". 
what is the diameter of earth in km UNANSWERABLE what is the axial tilt of the planet? Approximately 23.439281° describe the internal structure of it? It is divided into layers by their chemical or physical (rheological) properties. For eg. the outer layer is a chemically distinct silicate solid crust. what is a silicate? In chemistry, it is any member of a family of anions consisting of silicon and oxygen. how is it detected? It reacts with molybdate anions yielding yellow silicomolybdate complexes. what is zeolite to it? The nature of soluble silicates is relevant to understanding biomineralization and the synthesis of aluminosilicates, such as the industrially important catalysts called zeolites. is it naturally occurring? Conventional open-pit mining techniques are used to mine natural zeolites. what is "biomineralization"? It is the process by which living organisms produce minerals, often to harden or stiffen existing tissues. mention a few of its applications? Organic macromolecules collect and transport raw materials and assemble the substrates and into short- and long-range ordered composites with consistency and uniformity. what is the relation of it with contaminating groundwater? It may be used to remediate groundwater contaminated with uranium. what are the other minerals produced from such a process? Magnetite, Goethite  and  pyrite
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Goethite [SEP] Usage
Its main modern use is as an iron ore, being referred to as "brown iron ore". It does have some use as a clay earth pigment. Iron-rich lateritic soils that have developed over serpentinite rocks in tropical climates are mined for their iron content, as well as other metals. Fine goethite specimens are rare and therefore are valued collectibles. Banded or iridescent varieties are cut and polished into cabochons for jewelry making. Perhaps the oldest known use of goethite comes from the ancient kingdom of Phrygia. In a royal tomb a body was found believed to be King Gordias, father of the legendary King Midas.