Manufactured natural pozzolan, improved manufactured natural pozzolan-based cement and method of making and using same

A composition comprising:

• a first mineral in particulate form having a volume-based average particle size of approximately 15 to approximately 60 μm and having a first pozzolanic reactivity, wherein the first mineral comprises:
• a crystalline or amorphous mineral aggregate comprising less than or equal to 25% by weight glass or amorphous content, approximately 5% to approximately 60% by weight Plagioclase Feldspar, 0% to approximately 40% by weight Clinopyroxene, 0% to approximately 30% by weight Amphibole, 0% to approximately 30% by weight other minerals with a minimum of 45% by weight silicon dioxide (SiO2);
• and
• a second mineral in particulate form and having a second pozzolanic reactivity greater than the first mineral pozzolanic reactivity, wherein the second mineral is Metakaolin having a volume-based average particle size of approximately 0.1 to approximately 10 μm and wherein particles of the second mineral are disposed on the surface of the first mineral.

A composition comprising:

• a first mineral in particulate form having a volume-based average particle size of approximately 15 to approximately 60 μm and having a first pozzolanic reactivity, wherein the first mineral comprises:
• a crystalline or amorphous mineral aggregate comprising less than or equal to 25% by weight glass or amorphous content, approximately 5% to approximately 60% by weight Plagioclase Feldspar, 0% to approximately 40% by weight Clinopyroxene, 0% to approximately 30% by weight Amphibole, 0% to approximately 30% by weight other minerals with a minimum of 45% by weight silicon dioxide (SiO2);
• and
• a second mineral in particulate form and having a second pozzolanic reactivity greater than the first mineral pozzolanic reactivity, wherein the second mineral is silica fume having a volume-based average particle size of approximately 0.1 to approximately 10 μm and wherein particles of the second mineral are disposed on the surface of the first mineral.

A composition comprising:

• a first mineral in particulate form having a volume-based average particle size of approximately 15 to approximately 60 μm and having a first pozzolanic reactivity, wherein the first mineral comprises:
• a crystalline or amorphous mineral aggregate comprising less than or equal to 25% by weight glass or amorphous content, approximately 5% to approximately 60% by weight Plagioclase Feldspar, 0% to approximately 40% by weight Clinopyroxene, 0% to approximately 30% by weight Amphibole, 0% to approximately 30% by weight other minerals with a minimum of 45% by weight silicon dioxide (SiO2);
• and
• a second mineral in particulate form and having a second pozzolanic reactivity greater than the first mineral pozzolanic reactivity, wherein the second mineral is aluminasilicate comprising approximately 50% to approximately 80% SiO2, approximately 5% to approximately 45% Al2O3 and having a volume-based average particle size of approximately 0.1 to approximately 10 μm and wherein particles of the second mineral are disposed on the surface of the first mineral.