水绿矾

{{Infobox mineral
| name = 水绿矾
| category = 硫酸盐矿物
| boxwidth =
| boxbgcolor =
| image = Melanterite2 - Copperas Mountain, Paxton Township, Ross Co, Ohio, USA.jpg
| imagesize = 260px
| alt =
| caption = 自然环境下的水绿矾
| formula = FeSO4·7H2O
| IMAsymbol = Mln
| strunz = 7.CB.35
| dana = 29.06.10.01
| system = 单斜
| class = 棱柱形 (2/m)
（H-M记号相同）
| symmetry = P21/c
| unit cell = a = 14.077 Å, b = 6.509 Å,
c = 11.054 Å; β = 105.6°; Z = 4
| color = 绿色、淡绿色、青蓝色、蓝绿色、无色
| colour =
| habit = 结壳和细长风化；少见等量伪八面体、棱柱或板状晶体
| twinning =
| cleavage = {001}完美，{110}清晰
| fracture = 贝壳状
| tenacity =
| mohs = 2
| luster = 玻璃光泽
| streak = 白色
| diaphaneity = 透明到半透明
| gravity = 1.89 - 1.9
| density =
| polish =
| opticalprop = 双轴 (+)
| refractive = nα = 1.470 - 1.471 nβ = 1.477 - 1.480 nγ = 1.486
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水绿矾（）是水合硫酸亚铁的矿物形式，化学式为FeSO4·7H2O，是胆矾的铁类似物。它会因风化而变成铁矾。它是一种次生硫酸盐矿物，由黄铁矿和白铁矿等原生硫化物矿物在近地表环境中氧化形成。它通常作为旧地下矿井表面上的矿后结壳产生。它也出現在暴露於潮濕空氣的煤層和褐煤層中，並作為火山噴氣孔周圍稀有的昇華相出現。它的伴生矿物包括铜绿矾、胆矾、泻利盐、镁铝矾、铁铝矾等硫酸盐矿物。它于1850年首次被描述。

圖集
File:Melanterite crystal structure.png|水绿矾的的晶体结构
File:Cuprian Melanterite - Parys Mountain Mines, Amlwch, Isle of Anglesey, Wales, UK.jpg|含铜水绿矾

参考资料