Fundamental Minerals

Sialic Minerals

Feldspars

Feldspathoids

Quartz

Femic Minerals

Spodumene

Accessory Minerals

Rare Accessory

Alteration Products

Microstructures

Rocks

Jacupiranga complex

Orthocumulates

Orthocumulates form when the intercumulus liquid is compositionally different from earlier formed cumulate crystals and precipitates different intercumulus minerals. There is little or no exchange between the intercumulus liquid and the main chamber.

Bibliography

• Cox et al. (1979): The Interpretation of Igneous Rocks, George Allen and Unwin, London.
• Howie, R. A., Zussman, J., & Deer, W. (1992). An introduction to the rock-forming minerals (p. 696). Longman.
• Le Maitre, R. W., Streckeisen, A., Zanettin, B., Le Bas, M. J., Bonin, B., Bateman, P., & Lameyre, J. (2002). Igneous rocks. A classification and glossary of terms, 2. Cambridge University Press.
• Middlemost, E. A. (1986). Magmas and magmatic rocks: an introduction to igneous petrology.
• Shelley, D. (1993). Igneous and metamorphic rocks under the microscope: classification, textures, microstructures and mineral preferred-orientations.
• Vernon, R. H. & Clarke, G. L. (2008): Principles of Metamorphic Petrology. Cambridge University Press.

Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 2x (Field of view = 7mm)	Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 2x (Field of view = 7mm)	Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 2x (Field of view = 7mm)
Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 2x (Field of view = 7mm)	Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 2x (Field of view = 7mm)	Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 10x (Field of view = 2mm)
Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 10x (Field of view = 2mm)	Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 10x (Field of view = 2mm)	Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 10x (Field of view = 2mm)
Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 10x (Field of view = 2mm)	Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 10x (Field of view = 2mm)	Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 10x (Field of view = 2mm)
Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 10x (Field of view = 2mm)	Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 10x (Field of view = 2mm)	Plagioclase crystals with interstitial hornblende in a orthocumulates from Sardinia (Italy). XPL image. 10x (Field of view = 2mm)
Altered olivine phenocrysts enclosed in poikilitic hornblende. PPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. XPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende and pyroxene. PPL image. 2x (Field of view = 7mm)
Altered olivine phenocrysts enclosed in poikilitic hornblende. PPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. PPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. PPL image. 2x (Field of view = 7mm)
Altered olivine phenocrysts enclosed in poikilitic hornblende. XPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. XPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. XPL image. 2x (Field of view = 7mm)
Altered olivine phenocrysts enclosed in poikilitic hornblende. PPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. XPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. XPL image. 2x (Field of view = 7mm)
Altered olivine phenocrysts enclosed in poikilitic pyroxene. PPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic pyroxene. PPL image. 10x (Field of view = 2mm)	Altered olivine phenocrysts enclosed in poikilitic pyroxene. PPL image. 10x (Field of view = 2mm)
Altered olivine phenocrysts enclosed in poikilitic pyroxene. XPL image. 10x (Field of view = 2mm)	Altered olivine phenocrysts enclosed in poikilitic pyroxene. XPL image. 10x (Field of view = 2mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. XPL image. 10x (Field of view = 2mm)
Altered olivine phenocrysts enclosed in poikilitic hornblende. XPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. PPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. PPL image. 10x (Field of view = 2mm)
Euhedral olivine crystal enclodes in Pyroxene. XPL image. 10x (Field of view = 2mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. XPL image. 10x (Field of view = 2mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. XPL image. 2x (Field of view = 7mm)
Altered olivine phenocrysts enclosed in poikilitic hornblende. PPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. XPL image. 2x (Field of view = 7mm)	Altered olivine phenocrysts enclosed in poikilitic hornblende. PPL image. 2x (Field of view = 7mm)
Poikilitic augite in a orthocumulite. New Zeland. PPL image. 2x (Field of view = 7mm)	Poikilitic augite in a orthocumulite. New Zeland. XPL image. 2x (Field of view = 7mm)	Poikilitic augite in a orthocumulite. New Zeland. PPL image. 2x (Field of view = 7mm)
Poikilitic augite in a orthocumulite. New Zeland. ZPL image. 2x (Field of view = 7mm)	Poikilitic augite in a orthocumulite. New Zeland. PPL image. 2x (Field of view = 7mm)	Poikilitic augite in a orthocumulite. New Zeland. PPL image. 2x (Field of view = 7mm)
Poikilitic augite in a orthocumulite. New Zeland. XPL image. 2x (Field of view = 7mm)	Poikilitic augite in a orthocumulite. New Zeland. XPL image. 2x (Field of view = 7mm)	Poikilitic augite in a orthocumulite. New Zeland. XPL image. 2x (Field of view = 7mm)
Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 2x (Field of view = 7mm)	Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 2x (Field of view = 7mm)	Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 2x (Field of view = 7mm)
Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 2x (Field of view = 7mm)	Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 2x (Field of view = 7mm)	Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 2x (Field of view = 7mm)
Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 10x (Field of view = 2mm)	Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 10x (Field of view = 2mm)	Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 10x (Field of view = 2mm)
Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 10x (Field of view = 2mm)	Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 10x (Field of view = 2mm)	Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 10x (Field of view = 2mm)
Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 10x (Field of view = 2mm)	Ehuedral olivine crystals with interstitial plagioclase in a orthocumulite. New Zeland. XPL image. 10x (Field of view = 2mm)