Mafic 89 9 is an event that took place in the Mafic complex in 1989. The Mafic complex is a geological formation located in a remote region known for its rich mineral deposits. Mafic rocks are characterized by their high content of magnesium and iron, giving them a dark color. The event was a significant milestone in the exploration and extraction of minerals in the Mafic complex. It marked a breakthrough in understanding the complex geology of the area and the potential for valuable mineral deposits. During Mafic 89 9, a team of geologists, geophysicists, and mining engineers carried out extensive surveys and sampling in the Mafic complex.
For the purposes of this section the word, ''vehicle'', shall include a trackless trolley.
The driver of a vehicle approaching a yield sign shall in obedience to such sign slow down to a speed reasonable for the existing conditions and, if required for safety to stop, shall stop at a clearly marked stop line, but if none, before entering the crosswalk on the near side of the intersection, or, if none, then at the point nearest the intersecting roadway where the driver has a view of approaching traffic on the intersecting roadway before entering it. Mafic minerals from the core of the intrusion are highly magnesian, a consistent increase in the Mg of olivine from 69 to 87 , Opx from 62 to 89 , Cpx from 85 to 96 and hornblends from 62 to 88 is observed from the mafic to the ultramafic units.
During Mafic 89 9, a team of geologists, geophysicists, and mining engineers carried out extensive surveys and sampling in the Mafic complex. Their goal was to identify and assess the mineral resources present in the area. The team employed various techniques, including geological mapping, geophysical surveys, and drill core analysis.
Gabbro Akarem mafic-ultramafic complex, Eastern Desert, Egypt: a Late Precambrian analogue of Alaskan-type complexes
¶Gabbro Akarem is a Late-Precambrian concentrically-zoned mafic-ultramafic intrusion located along a major fracture zone trending NE-SW in the Eastern Desert of Egypt. It intruded low-grade metasedimentary rocks, and has a contact metamorphic aureole a few meters wide. This intrusion comprises a dunite core enveloped by clinopyroxene hornblende-bearing lherzolite, olivine-hornblende clinopyroxenite and plagioclase hornblendite. The contacts between the rock types are gradational. They have cumulate textures and the observed crystallization sequence is: olivine ( + cotectic spinel)-orthopyroxene (Opx)-clinopyroxene (Cpx)-hornblende. Mafic minerals from the core of the intrusion are highly magnesian, a consistent increase in the Mg# of olivine (from 69 to 87), Opx (from 62 to 89), Cpx (from 85 to 96) and hornblends (from 62 to 88) is observed from the mafic to the ultramafic units. Spinel has a wide range of Cr# and Mg# ratios. The various rock units define a fractionation trend. The mafic rocks are slightly LREE-enriched relative to the ultramafic units and chondrites.
In many aspects, the Gabbro Akarem intrusion is similar to Alaskan-type complexes. Mineralogical and geochemical data suggest that the different rock units were fractionated from a hydrous picritic magma with no apparent crustal contamination. A petrogenetic model involving a rapid rise of hydrous mantle magma along a major fracture zone is proposed. Extensive fractional crystallization led to magma chamber stratification; internal circulation and strong vertical stretching up the center of the rapidly rising diapir increased the rate of magma ascent towards the core. Due to cooling and high viscosity the marginal mafic magma was partly crystallized while the unsolidified core ultramafic magma continued its ascent. As a result, different mineral phases crystallized at different pressure-temperature paths. Field relations, geophysical, petrological and experimental studies support this model which explains many of the characteristics of the Gabbro Akarem and some other concentrically zoned mafic-ultramafic intrusions.
Except when directed to proceed by a police officer, every driver of a vehicle approaching a stop sign or a flashing red signal indication shall stop at a clearly marked stop line, but if none, before entering the crosswalk on the near side of the intersection, or, if none, then at the point nearest the intersecting roadway where the driver has a view of approaching traffic on the intersecting roadway before entering it. After having stopped, the driver shall yield the right of way to any vehicle in the intersection or approaching on another roadway so closely as to constitute an immediate hazard during the time when such driver is moving across or within the intersection or junction of roadways.
These methods allowed them to gain a better understanding of the rock formations and the distribution of minerals within the complex. One of the key findings of the Mafic 89 9 event was the discovery of significant deposits of platinum group elements (PGEs) in the Mafic complex. PGEs are a group of rare and valuable metals that include platinum, palladium, and rhodium. Their discovery created a buzz in the mining industry, as these metals have high industrial and economic importance. The Mafic 89 9 event also led to the establishment of several mining operations in the Mafic complex. These operations focused on extracting PGEs, as well as other valuable minerals like nickel, copper, and gold. The success of Mafic 89 9 and subsequent mining activities in the Mafic complex brought economic growth to the region. It created job opportunities for local communities and contributed to the development of infrastructure in the area. However, the event also raised concerns about the environmental impact of mining activities in the Mafic complex. The extraction and processing of minerals can have detrimental effects on the surrounding ecosystems if not properly managed. As a result, measures were put in place to minimize the environmental footprint of mining in the Mafic complex. These included implementing strict regulations on waste disposal, conducting regular environmental assessments, and investing in sustainable mining practices. Overall, Mafic 89 9 was a significant event in the history of the Mafic complex and the mining industry. It played a pivotal role in uncovering the mineral wealth of the area and shaping the economic and environmental strategies for its exploitation..
Reviews for "Mafic 89 9 and its Implications for the Formation of Ore Deposits"
1. Jane - 2 stars - I was really disappointed with "Mafic 89 9". The plot was confusing and hard to follow, and the characters were poorly developed. I couldn't connect with any of them, and I found myself not caring about what happened to them. The writing style was also lacking, with awkward dialogue and choppy descriptions. Overall, I wouldn't recommend this book to anyone looking for a captivating and well-written story.
2. Mark - 1 star - "Mafic 89 9" was a complete waste of my time. The storyline was absurd and nonsensical. It felt like the author was trying too hard to be unique and ended up creating a convoluted mess. The characters were one-dimensional and the dialogue was cringe-worthy. I struggled to finish this book and regretted every minute I spent reading it. Save yourself the trouble and skip this one.
3. Sarah - 2 stars - I had high hopes for "Mafic 89 9" based on the positive reviews, but I was sorely disappointed. The story started off promising, but quickly turned into a jumbled mess. The writing style was confusing and lacked coherence. The characters were underdeveloped and lacked depth, making it hard to connect with any of them. I found myself constantly questioning the author's choices and felt like I wasted my time reading this book.
4. Brian - 2.5 stars - "Mafic 89 9" had potential, but it fell short for me. The concept was interesting, but the execution was lacking. The pacing was inconsistent, with long stretches of boredom followed by rushed and confusing action. The characters were forgettable and their motivations were unclear. The writing style was also a letdown, with repetitive phrases and clichéd descriptions. Overall, I was left unsatisfied with this book and wouldn't recommend it to others.
5. Emily - 2 stars - I struggled to get through "Mafic 89 9". The story was convoluted and hard to follow, with too many unnecessary plot twists and confusing subplots. The characters were unlikable and lacked depth, making it hard to care about their fates. The writing style was also mediocre, with awkward sentence structure and repetitive phrases. I found myself constantly skimming through the pages, hoping it would get better, but it never did. I wouldn't recommend this book to anyone looking for a well-structured and engaging read.