All posts by idb

ML318 Chalcedony

Code: ML318 名稱   玉髓Name   Chalcedony化學公式   SiO2Chemical Formula   SiO2莫氏硬度   7Mohs scale of Hardness   7描述   玉髓為無色,白色,灰色,藍色,由於嵌入的礦物質而具有任何顏色,彩色標本並不罕見。Description   Chalcedony is colorless, white, gray, blue, any color due to embedded minerals, multicolored specimen not uncommon.  小挑戰   我們在哪裡可以找到這石頭? 我們可以在伊斯坦布爾和土耳其找到Challenge   Where can we find this stone? The stone can be found in Istanbul and Turkey. Reference https://www.mindat.org/min-960.html

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ML316 Prase

Code: ML316 名稱   綠蛋白石Name   Chrysoprase化學公式   SiO2Chemical Formula   SiO2莫氏硬度   6.0–7.0Mohs scale of Hardness   6.0–7.0描述 是玉髓(一種隱晶形式的二氧化矽)的寶石品種,其中含有少量的鎳。它的顏色通常為蘋果綠,但會變為深綠色。綠水晶蛋白酶的較暗的品種也稱為綠蛋白酶。 (但是,術語prase也用於描述包含亞氯酸鹽的石英,在一定程度上是顏色的描述,而不是嚴格定義的礦物品種。)Description is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel. Its color is normally apple-green, but varies to deep green. The darker varieties of chrysoprase are also referred to as prase. (However, the term prase is also used to describe chlorite-included quartz, and to a certain extent is a color-descriptor, rather than a rigorously defined mineral variety.)小挑戰…

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ML315 Scholzite

名稱  Name磷鈣鋅石Scholzite化學公式  Chemical FormulaCaZn2(PO4)2•2H2OCaZn2(PO4)2•2H2O  莫氏硬度  Mohs scale of Hardness  描述Description  Scholzite 是一種罕見的磷酸鋅礦物,來自德國巴伐利亞州哈根多夫的經典磷酸鹽礦物產地。 Hagendorf 地區包含一個富含磷酸鹽的偉晶岩侵入體,該侵入體經歷了一定程度的改變。稀有礦物如鋰長石是來自這個著名礦場的慷慨饋贈。 Scholzite 形成漂亮的亮白色板狀晶體,並與其他稀有磷酸鹽有關。當與其他稀有礦物結合時,標本會特別好。  Scholzite is a rare zinc phosphate mineral and comes from the classic phosphate mineral locality at Hagendorf, Bavaria, Germany. The Hagendorf locality contains a phosphate rich pegmatitic intrusive body that has undergone a certain amount of alteration. Rare minerals such as scholzite are a generous gift from this famous mineral site. Scholzite forms nice bright white tabular crystals and is associated with other rare phosphates. Specimens can be especially nice…

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ML313 Fluorescent Calcite

名稱  Name熒光方解石Fluorescent Calcite化學公式  Chemical FormulaCaCO3CaCO3莫氏硬度  Mohs scale of Hardness 3 3描述Description  某些礦物質能夠吸收波長為 200 納米至 400 納米的不可見紫外線,並發出波長為 400 至 700 納米的可見光,並在黑暗中“發光”,並發出熒光。  Certain minerals are capable of absorbing invisible ultraviolet light with a wavelength from 200nm to 400nm and give off visible light with a wavelength from 400 to 700nm and “glow” in the dark, they fluoresce.小挑戰Challenge  什麼讓礦物發光?   大多數熒光礦物質需要引發熒光的活化劑。活化劑是在不同的地方已經包含在原始晶體結構中的少量某種化學元素或雜質。然而,一些元素如鐵和銅的雜質會阻止礦物中的熒光。  What makes a mineral glow?Most fluorescent minerals require an activator that initiates fluorescence. The activator is a small amount of a certain chemical element or impurity having been included…

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ML312 Fluorescent Hardystonite/ Clinohedrite/ Willemite minerals

Code: ML312 名稱   熒光黃長石Name Fluorescent Hardystonite化學公式   Ca2ZnSi2O7Chemical Formula Ca2ZnSi2O7莫氏硬度   3-4Mohs scale of Hardness 3-4描述   顏色:從深紫色到明亮的紫藍色,在白天, 顏色從白色到灰色到淺粉紅色,有時具有玻 璃光澤或油膩光澤。 光澤:玻璃質,樹脂質,油膩,暗淡Description Colour: from dark purple to bright violet   blueIn daylight, it is white to gray to light  pink in color, sometimes with a vitreous or  greasy luster. Luster: vitreous, resinous, greasy, dull Reference 1. https://en.wikipedia.org/wiki/Hardystonite 2. https://www.ebay.com/itm/FLUORESCENT-Hardystonite-Clinohedrite and-Willemite-FR770-/274682848345 By 4B Thomas Mak 22 on 19-4-2021

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ML311 Fluorescent Opal Fluorite minerals crystals (Tiffany Stone)

Code: ML311 名稱 熒光蛋白石螢石礦物晶體Name Fluorescent Opal Fluorite minerals crystals (Tiffany Stone)化學公式 CaF2Chemical Formula CaF2莫氏硬度 4Mohs scale of Hardness 4描述 顏色-通過各種顏色變為黑色無色 光澤-玻璃蠟狀,沉重時變鈍 條紋-白色Description Color – Purple, blue purple Luster –Sub-Vitreous, Resinous, Waxy, Greasy Streak – White Tenacity – Brittle小挑戰 在哪裡可以買到?它最有可能在寶石和礦物展覽會上出售。Challenge Where can you buy it? It is most likely to be sold at a gem and mineral show. Reference 1. https://www.mindat.org/min-46089.html By 4B21 Ma Ka Yu (21) on 19/4

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ML310 Fluorescent gems rock with Willemite/ Calcite/ Franklinite minerals crystals

Code: ML310 名稱 CalciteName 方解石化學公式 CaCO3Chemical Formula CaCO3莫氏硬度 3Mohs scale of Hardness 3描述 它是無色或白色。條紋是白色的,在乳溝表面上的光澤為玻璃態至珍珠色。Description It is colorless or white. The streak is white and the luster is vitreous to pearly on cleavage surfaces. 小挑戰 方解石是否脆性?方解石易碎 Challenge Is Calcite brittle or not? Calcite is brittle Reference https://en.wikipedia.org/wiki/Calcite By 4B Lo King Wai 20 on 28 Mar 2021

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ML309 Fluorescent minerals collection (Longwave & shortwave)

Code: ML309 名稱 熒光礦物藏品(長波及短波  Name Fluorescent minerals collection (Longwave & shortwave)化學公式   –Chemical Formula –莫氏硬度   –Mohs scale of Hardness –描述 當某種常溫物質經某種波長的入射光照射,吸收光能後進入激發態,並且立即退激發並發出出射光;而且一旦停止入射光,發光現象也隨之立即消失。具有這種性質的出射光就被稱之為螢光。一般以持續發光時間來分辨螢光或磷光,持續發光時間短於10-8秒的稱為螢光,持續發光時間長於10-8秒的稱為磷光。在日常生活中,人們通常廣義地把各種微弱的光亮都稱為螢光。  Description   When a certain room temperature substance is irradiated by incident light of a certain wavelength, it enters an excited state after absorbing light energy, and immediately de-excites and emits outgoing light; and when the incident light is stopped again, the luminescence phenomenon disappears immediately.  Generally, fluorescence or phosphorescence is distinguished by continuous emission time. Those with continuous emission time shorter than…

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